User blog comment:SpartHawg948/Official XBox Magazine covers ME3/@comment-69.144.238.157-20110605165632/@comment-1221773-20110605222258

The Game Informer article sort of hinted at it (or at least that was how I read it). It was in that section with the storyboard about the Reaper vs. Thresher Maw fight, Shepard's traveling in a krogan convoy with turian fighters flying overhead. What I got from it was that turian and krogan forces were fighting the Reaper simultaneously, if not cooperating and coordinating their effort.