Lips fans have been noticing a steep drop-off in the amount of DLC available for the game in recent weeks, with only a handful of new songs being made available in February, and it would seem none in March. I reached out to Microsoft to find out what their plans were for the series, and unfortunately, all I was told was that in celebration of St. Patrick's Day, two songs that are already available would be discounted 80 Microsoft Points as part of the Deals of the Week. So if you're interested in "Some Guys Have All The Luck" by Rod Stewart or "Chasing Cars" by Snow Patrol, you can get 'em for half-off from March 14 through March 20.
As for any information about new DLC in the coming weeks or the future of the series as a whole, I got nothin'. But I'll keep digging, and if I find out anything, I'll be sure to let you know! (I can't be the only one who still is a fan of this game!)