First, welcome back! You haven't missed that much. The new expansion has been announced, new playable race is coming out. Game wise, there is a new ppv map, if that's your thing. Contested dungeon of high keep (can't remember if that was in the last 3 months or not)
I don't think much has really changed in the past 3 months... Just lots of stuff coming up soon is all. Welcome back btw.