There have been changes. Our macro system changed, you can't use commas anymore so most people are using
step or
priority setups for the most part. Which works out since most classes moved from standard rotations to priorities as well. Then again, we've got an expansion coming, so any of those could change again.
Follow no longer works in BGs so if PvP was your thing you'll want to stick to world pvp and arenas { I think?} to use follow or employ
interact mechanics.
The follow changes combined with a lot of long stretches between content updates has made WoW pretty quiet overall. There's a few people playing, but games like Eve and Rift have been seeing a lot more activity. People will probably start coming back as WoD gets closer, but there's not a lot of
exciting news coming in for us yet. There is enough to get some
PvP speculation going and some chatter on
PvE groups and Ebony is keeping us updated on
Boxing Beta.
There's also tons of videos up in
The Commons so you can get a look at what people have been doing this expansion. MiRai has also been busy with
his series on Multiboxing with ISBoxer. Don't forget to check the normal
Movies forum, too since people don't always use The Commons. And if you are doing PvE, the
Dungeon Forum has been reorganized so you can find all those helpful little tips easier.