There are web sites with reams of news about iOS 5 features.
I'd trade them all for a fix for the iPhone/iPad Calendar.app color assignment problem:
Of the 10 calendars currently in my iPhone subscription list (9 Google ActiveSync Calendars, 1 corporate ActiveSync), 6 have been assigned a calendar color of "brown/beige".
iOS doesn't give users control over calendar color assignment, and the algorithm it uses to assign colors is broken even within a single server source. I think it once worked better, but even then color distribution was within a server, not across servers.
So is this fixed with iOS 5?
It seems not. With iOS 5 calendar color assignment works with iCloud/iCal, but there's no change for ActiveSync users. It's a sign that the Apple-Google war never really ended, it just became a grudging, surly, detente.
The costs of switching my family from iOS to Android are extremely high. It would take a lot to drive me down that road. Every time I look at my calendar however ...