From what I've read, there's going to be a homebrew enabler released soon. And from what I've seen, it allows homebrew launching from the menu temporarily after performing the Patapon 2 demo exploit. I've heard that this means great things, but nothing's confirmed. It sounds promising enough that I'll get a PSP Go. Even if nothing big happens, I'm still 50% in it for retail games and then I can use my Wiz for all else (because using the HBL seems like a pain and the screen is still fantastic on the Wiz)
EDIT (12/23/10): It's released. There are various problems, but it's real. It should improve with time, and with support.