Background downloads will change apps, sure. But does that really constitute a "complete re-think of how applications work"? It's the same feature, just implementable in a better way.
And people are in shock after years of iOS looking pretty much the same. When everyone actually looks at things objectively, they'll realise that their apps need to look a little different, behave a little different, but overall be pretty much the same apps they were before.
And people are in shock after years of iOS looking pretty much the same. When everyone actually looks at things objectively, they'll realise that their apps need to look a little different, behave a little different, but overall be pretty much the same apps they were before.