Early days right now, but from what we saw at WWDC 2014 the ouster of Forstall will not be Apple's turning point. The visual revamp of iOS7 and now the co-operative Yosemite/iOS8 update simply wouldn't have been possible before.

The key difference between Forstall and Jobs was that Jobs was Apple's asshole, Forstall was his own. Running a group like the iOS group within Apple in such an insular fashion is not sustainable.