http://www.gearboxsoftware.com/community/articles/1198/get-ready-for-gearbox-s-newest-game-battleborn
http://www.gameinformer.com/b/news/archive/2014/07/08/game-informer-august-cover-reveal-gearbox-battleborn-654814351318.aspx
Today we’re happy to announce our newest creation, Battleborn.
We’re calling Battleborn a “hero shooter” in that it’s a first-person shooter focused on characters above all else. No first-person shooter has ever had this much character variety, and we’re excited for you to see the first batch of heroes today.
Battleborn...

This is exciting for me on two levels. One, a first-person MOBA and the 5-player co-op campaign mode, and two, not another Borderlands game. Anxious to see more of this.
This needs to be out now.
I am with you guys, this looks really interesting.
Interested to see some gameplay footage.
That said, I like The Arcade Fire quite a bit and this song is pretty good, but it seemed a bit out of place for the trailer. That or i've heard it so much on the album it just seemed odd in this context.
M83, not Arcade Fire. But still a great song ;)
Actually, I thought it was Band of Horses when I first heard it. Had to look it up :D
That wasn't New Kids on the Block?
If they would have backed it with Hangin' Tough, I would have pre-ordered today.
DAMN IT M83. Right I have that M83 album too.

Anyways, well, for whatever reason it didn't seem to entirely fit the tone.
Honestly, Hangin' Tough would have made that trailer viral.
As far as I know I've never heard that song before, but I agree that it was kinda misplaced.
Hangin' Tough would have been the most logical choice.