Hello, new official version can be found at ftp://ftp.hp.com/pub/calculators/Prime/

As stated by Tim on http://www.hpmuseum.org/forum/thread-6085.html:

This is a major release with a lot of new functionality, and extensive under the hood work in prep for later things. The marketing "blurb" is as follows:

• Use the touch screen to move and stretch your function plots and see how your changes affect the equation
• Enhanced touch screen curve sketching with cubic support
• Add a picture to the background of any graph
• Draw your own fit with your finger in the Statistics 2Var app
• Improved help throughout the system
• Quality and reliability improvements

Note: Due to a need to format the internal flash structure of the calculator, all data will be lost during this update. Perform a "backup" using the connkit to save your data if there is anything you need to keep. If you click the "backup" button on the update screen and it immediately pops up a "failed" message, just click backup again and it should be fine.

The manuals are not yet ready for posting as they were delayed due to some unfortunate circumstances. On calculator help is up to date however.

HP Prime – Release Notes
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Date Released: 2016/04/14

Internal Versions
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Firmware Version:   2016 04 14 (10077)
Virtual Calculator Version:   2016 04 14 (10077)
Connectivity Kit:   2016 04 14 (10077)

Description
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This release of the Prime Calculator firmware and associated PC software delivers significant new features and fixes outstanding issues. This document is not a complete list of all changes, but highlights specific items. All users of the HP Prime calculator are encouraged to upgrade for the best possible experience.

Please back up your calculator before the update. Any existing data on the device will be wiped during the update process.



New Functionality (Connectivity Kit)
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1.   Progress bars on each calculator in tree to show transfer status
2.   Calculator and content pane now dockable windows. Connkit will remember and restore position/state of all windows
3.   Network mapped working directories supported
4.   Ability to add plot backgrounds to graphing applications
5.   Proctor mode to automatically start exam mode on connection
6.   Improved polling and sending of response data back to classroom
7.   Invalid .hpprgm files will be attempted to load as plain text if possible. Will attempt to determine text encoding format
8.   Turned on IP networking for future usage

New Functionality (Virtual Calculator)
--------------------------------------
1.   Added confirmation on emulator reset menu press

New Functionality (Calculator Software)
---------------------------------------
1.   Ability to manipulate functions in the Function app
a. Change expressions into other forms
b. Reposition and modify existing expressions
c. Cubics now also recognized in sketch and manipulation
2.   Use a picture for graph background
a. Choose from a built in image library, or add your own
b. Fit image to screen, or position at a specific Cartesian location
3.   Sketch a function directly in the Statistics 2Var App
4.   Recovered ~8MB of RAM for user use
5.   Improved interaction between CAS functions and HPPPL program. CAS functions can now access directly HPPPL local variables as expected
6.   Sequence app now allows N..N+1..N+2 form
7.   Gradian support for angle mode
8.   EQ function for exact equality test of list. EQ({1,2,3},{1,2,3}) -> 1
9.   =CHOOSE(...) now makes a drop down selector in the spreadsheet
10.   LNAME function to extract variable names from home functions
11.   Added UNION function
12.   Support for jpg read/write. AFiles("file.jpg",[1-100]):=G0
13.   Direct access to images stored as files. G1:=AFiles("myfile.jpg")
14.   Plot scatterplot/ode wizard in geometry app
15.   Added alpha blend to BLIT commands
16.   Added IFERR feature to enable access of the error value from the Ans variable on error
17.   Added support for alpha channel in PIXON commands
18.   Enhances PLOT-TABLE of Function, Polar, Parametric, and Sequence apps to bring up new G1,...,G9,TableSelection chooser for choosing what to copy where
19.   Option for split stems in stem leaf plot
20.   New backup manager. You can now create, archive and restore backups on your calculator directly from memory manager
21.   VERSION() can take an argument to return that part of version info
22. TEXTOUT functions now return pixel coordinate of the end of the printed text.

Resolved issues and changes excluding CAS
-----------------------------------------
1.   Resolved issue with excess power drain while in exam mode and calculator was "off"
2.   Resolved issue with use of complex arguments for some drawing commands
3.   Resolved issue with certain RPN programs causing issues when called from stack
4.   Resolved issue where quadratic explorer SOLVE function will now return complex results
5.   Resolved issue with "Cannot find solution" with negative seed values
7.   Resolved issue in printing of complex with negative second component
8.   Resolved issue with color chooser in note screen
9.   Resolved issue with AVars accessing files from another application sometimes causing issues
10.   Resolved issue with "CAS." being appended in spreadsheet
11.   Resolved issue with declaring a LOCAL in home screen
12.   Resolved issue with calling ΠLIST with vector
13.   Resolved issues with SWAPROW/SWAPCOL
14.   Resolved issue with REPLACE on lists behaving inconsistently
15.   Resolved issue with INPUT choose lists and >9 items
16.   Resolved issues with SORT
17.   Resolved issue with summation rejecting non-integer values. Allows smooth plotting
18.   Resolved issue with small plot previews in home/CAS not using current app plot window
19.   Resolved issue with GETKEY working after third screen tap
20.   Resolved issue with lists and comparison operators
21.   Resolved issue with calling function such as DATEADD when named spreadsheet cell exists as "DATE"
22.   Resolved issue with DIFFERENCE and calling multiple lists as arguments
23.   Resolved issue with user app vars not showing in VARS menu
24.   Resolved issue with long hold on grid chooser not selecting item
25.   Resolved issue with exact() and approx() via [a b/c] key not setting Ans in CAS
26.   Resolved issue with fraction^power not displaying (fraction)^power for clarity
27.   Resolved issue with complex numbers and units needing ( ) for clarity
28.   Improved ITERATE command to allow up to 2^16 iterations
29.   Resolved issue where two parameter NORMALCDF behaving different in home/CAS. Now two params will give you the area for a standard normal between L/R ends
30.   Resolved issue where copying something like 1.5e-25/2 into command line in CAS from history did not do division template properly
31.   Resolved issue where stat 1var calculation with frequency when frequency sum was identical to 1 was throwing an error
32.   Resolved issue so that LOG(81,3) returns 4 and not 3.9999...
33.   Resolved issue with REPLACE expanding with strings, but not vectors
34.   Resolved issue with integration in programs not able to use local variables
35.   Resolved issue with Σ failing with local variables
36.   Pressing Esc from List/Matrix did not return to List/Matrix screen like Program/Notes behavior
37.   Resolved issue where [sto] was allowed as first character in home var name
38.   Resolved issue that prevented assigning a user variable a complex form polar in a program source
39.   Resolved issue where Linear Explorer SolveForSlope function did not have the order of arguments working as expected
40.   Resolved issue with Resid() and PredY() throwing an error if Med-Med was fit type
41.   Resolved issue where shift-copy would not allow copying of system help text
42.   Resolved issue where change of display format did not invalidate 2D expression cache resulting in stale number display
43.   Resolved issue where F1(X)=STUDENT(N,X) reports Signed Area as NaN. Fisher, and Chi will also now work as expected
44.   Resolved issue where program editor could misbehave and cause memory issues
45.   Resolved issue with memory leak when application had embedded PNG images
46.   Renamed "Rect" variable in Triangle Solver app to "TriType"
47.   Removed error check on proportion z interval to allow a negative confidence interval. - can be negative vs error
48. Resolved issues with WAIT/GETKEY not responding as expected after 3rd screen touch.

Resolved issues and changes in CAS
----------------------------------
1.   Improved results for tan(pi/24)
2.   Resolved issue with display of int(sqrt(1/x-1),x,1/2,1) (sqrt(1/4) getting converted to sqrt(1)/4 on copy
3.   Improved printing of (e^2)^3
4.   Fix for desolve([y'=[[1,2],[2,1]]*y+[x,x+1],y(0)=[1,2]])
5.   Fix for fsolve(x^3-3*x^2+4,x,-3..5)
6.   Support for gradians.
7.   Fix for solve(3 NTHROOT (2^(4*x-1))>=(2^(x-5))/(4 NTHROOT (16^x)))
8.   Fix for polynomial_regression(
9.   Resolved issue with "break" being parsed differently than "BREAK"
10.   Improved student_cdf for dof>=100
11.   Fix for limit((3*e^(2x)-12)/(e^(2x)-7*e^x+10),x,ln(2))
12.   Fix for forms like (sqrt(sqrt())
13.   Behavior change so that fsolve without guess now tries 0 if default bisection returns [ ]
14.   Fix for laplace([0,0],x,x) and a:=[[1,2,3],[4,5,6],[7,8,9]];[y0]:=desolve(y'=a*y and y(0)=[1,0,0]);
15.   Fix for solve(x^3=1.2e-15,x)
16.   Fix for ∂(∂(x^2*y^3,y),x)
17.   Enabled mod in parser as a synonym for irem (prefixed, MOD is infixed)
18.   Fix parsing of "return"
19.   Fix for int(abs(sin(2*pi*x)),x=0..1)
20.   Fix for sum(sum(1/(j+k),k,1,m),j,1,n))
21.   Make circle() work like circumcircle() when called with 3 args
22.   Modified implicitplot to returns a list instead of a sequence for hyperbola
23.   Fixes for ker and finite field factorization
24.   Fix for cfactor(2*x^3+x^2+x+1/2)
25.   Fix for solve((3*ABS(6-x)+2*ABS(3/2*x-5))=8,x)
26.   Fix for csolve(-256*p^5-128*p^4-16*p^3+2000*p^2+900*p+3233=0,p)
27.   Implicit multiplication warnings replaced by errors
28.   Fix in DELROW/DELCOL to eval second parameter
29.   Fix for int(1/(4+sin(3*x)),x,0,2)
30.   Add warning for (1+2)(3+4)
31.   Extend areas to support ellipse. e.g. area(ellipse(-1,1,2))
32.   Fix so simplify(sin(x-sin(x))') leaves unchanged
33.   Fix SVL for sym. matrices
34.   Fix for sum(legendre(j),j,0,3)
35.   Fixes for nested sqrt like normal(sqrt((1)-((5)*(sqrt(2)))))
36.   Fixes sum bug (-1)^(n+1) / n^2 and sum((-1)^(n+1)/n^4,n,1,inf)
37.   Modified geometric_cdf to be inclusive of lower bound
38.   Fix for assume(z>1000); sum(3^n*z^(-n),n,0,inf)
39.   Added Dirac support in ztrans