Don't forget, though, that this is unlikely to be the end. Lodsys clearly disagrees with this, given that they sent the letters to the developers, and will probably take Apple to court over whether the license applies to the app makers or not.
As it stands now, if there is to be a suit between Apple and Lodsys, it will require Apple to act as plaintiff on behalf of its developers and that could potentially open up a huge can of worms for Apple because it could establish a higher level obligations and responsibilities between Apple and its developers. The fact that Apple responded via public letter rather than lawsuit is indicative of approaching this as a PR issue rather than a serious licensing issue - i.e. if it was clear that Apple's agreement with Lodsys allowed them to sub-license the technology to third parties they would have sought an injunction rather than issuing what boils down to essentially a press release.
They aren't going to withdraw their suits just because apple threatens them.