I updated to iOS 6 forgetting about the issues last time. I used JeppFD the next day and it seemed to work fine. Updated fine, was able to enter a route with airways, and bluetooth GPS worked fine. No crashes.

Didn't try using the search bar though. I'll have to test that later, I seem to remember that quit working with the last update but they got it working again pretty quickly. Either way, unless you have an iPad 3, you don't really gain much with iOS 6 but you do lose Google Maps. With an iPad 3 you get Siri which can be quite helpful sometimes.