Gingerbread on the EVO, are you guys kidding me? Knowing Sprint's past I seriously doubt they will bother spending any resources on the EVO past Froyo or beyond a 2.x release. By the time Gingerbread is released the phone will be pushing 7 months old at least, and that's if Gingerbread doesn't have any setbacks. Another 6 months for HTC to work out the bugs in Sense and now we're out past a year, not too many phones I've seen on Sprint that gets updates over a year into release.
XDA on the other hand will probably have Gingerbread ported a week or two after release but I wouldn't hold my breath with Sprint for this to happen.
I was soooo hoping that the $10 a month fee might also cover TIMELY development on upgrades so that they can throw more of them at us faster, but that was probably just wishful thinking on my part.