Did you notice when Chester mentioned "Thursday"? That combined with Mike talking about an action-packed WEEK, I'd wager we'll either get a single with an album announcement, or we'll get an announcement of both with the single being released very soon. How much time passed between Burn It Down being announced and coming out? a matter of days? My guess is by Monday at the latest we'll have a single. Whether its from LP6 or Tranformers, I'm betting on a single.
As far as I remember, Mike posted a short clip on Youtube saying they were shooting the music video for Burn It Down, around the last week of March 2012. And in the same video, he announced it was releasing on April 16th. 3 weeks can be a pretty long wait. Hopefully it's much shorter this time, or even a surprise release would be good. I love surprises.