PSP GO WILL HAVE AN APP STORE!!!
I think this may have a bi of an impact on the homebrew scene. Now you can get apps that run on your device out of the box. Something the PSP should have had from the beginning. Sony said that they will be reducing the price of PSP dev kits by 80%, and I think the big thing will be porting all of the known homebrew.

Dev kits are all of those development tools that the official game makers have the luxury of using that we have gotten by fine without so far. But I think this will open up a lot of new possibilities in homebrew as well as a lot of restrictions( oh well that's what CFW is for, getting around restricitons)