I have learned to expect nothing. The last additions we had were bathrooms and benches, the "new fantasyland" that was announced 4 years ago only added one attraction and one restaurant (don't get me wrong I think its beautiful but it was a letdown from the original concept) and in the process closed down a ride to add a meet and greet, which has also been scaled back. Avatar land was announced what, 2 years ago and nothing has been done about it since, so I doubt we'll be hearing anything about that, I'm thinking they hoped everyone just forgot they even mentioned it. I think all they will talk about are the magic bands and the new interactive games they added to Adventureland, AK and Epcot.
However, what I would like them to announce would be some TLC for Epcot with a new film for Soarin, and DHS including the Monsters Inc coaster, more details about the new parade at MK, and an added land for AK with an E ticket attraction (Avatar based or not, at this point as long as they do it right I'll be happy).