The biggest things off the top of my head since you left:
We have master packs of all placeables and all tilesets.
Placeables, lots of placeables. rjshae has made/converted a ton and tchos has brought a ton in from Witcher (CD Project Red being awesome and allowing this)
People have figured out how to so several "impossible" things, like ingame movies (not just at beginning/end of module.
We've gotten a surprising amount of new tilesets, enough to pleasantly annoy the person who maintains the master tileset pack.
The old Vault died, but the community reacted by getting everything from the old Vault and putting it on the new, community owned Vault. If you like the Nexus, their owner also put up a site for us.
Drechner and team finished the Baldur's Gate Reloaded module, bringing BG into NWN2 land. They are hard at work on BG2 and Throne of Bhaal.