By examining last apple's statement about in-app purchases in iOS 6, I can say, that currently game is over. Currently we have no way to bypass updated APIs. It's a good news for everyone, we have updated security in iOS, developers have their air-money.
But, service will still remain operational until iOS 6 comes out.
The another thing is for in-appstore for OS X. We still waiting for apple's reaction and we have some cards in the hand. It's good that OS X is open.