I'm divided on this one.
Tweetbot, in my humble opinion, was somewhat unmatched for UI/UX in the pre-iOS7 days. While I'm excited to see how they go with it, I don't believe that the flat, iOS7 "look" is always the required, or indeed right, way to go.
“I don't believe that the flat, iOS7 "look" is always the required, or indeed right, way to go.”
Yes × 1,000,000.
There’s a wide spectrum of executions. Minimal designs with flat colours can be awesome, but let’s not kid ourselves — it’s only one of many flavours. Not only that, but I think staunchly stock iOS 7 themed apps will look very dated in a year.
It won’t take long for interesting, custom user interfaces to make a comeback.
I agree. I work for a popular word game whose visual roots (as far as I can tell, I never met the original designer) were in iOS 2 / OS X Aqua. A lot of the UI relies on the illusion of depth (not the interaction models, the visuals) so it's been interesting exploring how we can take the current app as a starting point and see if there is an appropriate way to bring it more in-line with the expectations of our players, now that so many other bigger-name apps are going for pretty straight-up iOS 7 HIG designs.