I really hope that Japanese developers take advantage of this situation to show off at least some of the creativity that's possible when we're not quite as limited by Apple's restrictions. I don't doubt that from a 'security' point of view, Apple is going to continue to enforce all sorts of things that make it wildly more difficult to use the supercomputer in our pockets than I would like. But nonetheless, perhaps this gives a bit of room to be a little more illustrative.
I know that from time to time people have argued that jailbreaking should have resulted in more creativity if it were going to, but with that tiny, tiny market, it's hard to believe that many developers, relatively speaking, would have been able to go hard at building something custom and impressive. With this larger market, hopefully folks will get the chance to do that now.