Looks like they are trying to recruit a recovered Mike to become their muscle. But the scene with Mike/Walt showdown at the beginning looks awesome. And I wonder who the guy closing the car trunk towards the end of the trailer was, possibly a player from the cartel? I hope not since they've already explored the whole Mexican drug cartel angle. I don't think the big angle for the season will be them feuding with some cartel, I think it's going to be Hank right on the verge of finding out the truth about Walter or Jesse/Mike going into business and Walt being left out possibly, but with Vince Gilligan... who the fuck knows.
re: Breaking Bad Thread (NO SPOILERS OUTSIDE OF THIS THREAD. INCLUDING SIGS & CHATBOX.)
Reading all the comments from Vince Gilligan and the cast, the season will concentrate on Walt trying to stay in the business and manipulating everyone to follow him. Very little of the older Walt this season. Gus's business connections which were mentioned last season will also play a big part.