Welcome back! We know people take breaks for various reasons. Check out the Producer's letter on the LOTRO forums for some hints about the Mordor expansion pack coming later this year. At level cap, we've reached the Black Gate and are doing flower-picking and rep crafting with some new instances.
The 10th Anniversary celebration starts this week. The LOTRO forums have some information about events and activities for that.
There are a few people around the level of your warden. As always, if there's anything you need to help with your levelling, be sure to ask.