Welcome home!
Sounds like you barely got to touch the SA expansion stuff so there is lots there to do.
EM events are also in full swing. Stratics has added a few new forums including the EM forums to help with event info.
New arties were introduced recently.
Hmmm.... when did Global chat come in? If you missed it's introduction, there is a new chat system where you can enter chat channels and then hit a comma before text to speak in it.
There's lots more, but that's all that comes to mind.