My limited experiences so far:
Warrior - He can now spin at will it seems. No more snare kiting or slowing since he will just spin out of it. Have to get way out of their range when they spin, but still can't burn blink because he can still charge into you. I just can't kite them anymore. I still hate spell reflects also. Anybody else?
Priests - I've seen them living through 3-4 player focus fire now. In BG's one was standing up to 6-7 players no kidding : I ran into a Shadow Priest last night who mitigated all of my frostbolts and icelance shatters damage in wisp form to the point i could barely dent him, and basically killed me in 3 globals. Then again i ran into him again later and killed him after i locked him out of shadow. I'd assume he burned some long CD the first time?
Just sharing my experiences so don't flame me for not knowing the names of each ability. Any tips or experiences anyone else has had with 3.11 1v1 changes?