Hello there and welcome back!
Trinity is most definitely still active! We're currently building more areas and creating more quests as Mort said.
I'm currently working on finishing up the city of Ur Draxa, and then working on the surrounding lands. There have been several additions to the end game areas to play through as well. Not to mention set items, runes for items, character persistent storage, etc. Soon the LLC (Low Level Campaign) will be starting up again. I could go on, but you get the idea.Short Answer
: There's lots of stuff going on!
Hope to see you soon,