D&D Encounters Season 2 only has a few sessions left and Season 3 starts up immediately. From the previews I've seen, it looks like they are throwing all their current tricks at it. It will be set in the Nentir Vale, it'll incorporate elements of the "Chaos Scar" theme from current Dungeon Magazine adventures. It will feature Essentials characters and try and invoke a retro-game feel of classic D&D (hence the subtitle Keep on the Borderlands).
I think it sounds like it could be interesting.
Do we want to swap out DMs? Would people like me to DM again? This season is longer than the previous ones so we could always swap out DMs between chapters if our people would like to run the game.