This is Apple not Microsoft. There won't be any major issues with iOS 7 which has been strenuously tested.
I'll be upgrading the second it becomes available on all my devices.
Wow, your naive. iOS has had it fair share of major bugs, and 7 is a major release. 5 & 6 gave me massive wifi and battery issues.
Of course I'm going to upgrade to 7. But I'll wait a couple of days for the enevitable .01 bug fix release.
Daft poll.