There hasn't been much activity in the HP Prime world lately (most likely a different schedule that HP guys have with their jobs compared to students at school, so I assume that activity will pick up this Summer), but Patrice just posted this Conway's Game of Life program on MoHPC:

http://www.hpmuseum.org/forum/thread-555.html

I tried it and I get around one frame every 4.5 second, which isn't great and possibly shows HP PPL limits, but the author says it isn't optimized, so maybe he will manage to make it faster. Nonetheless, the performance is sure way better than anything TI-BASIC could ever have produced.

EDIT: Here's a screenshot of his program