IGN has the first cover of Dark Avengers up. There has been a lot of guesswork on the message boards that this lineup is actually going to be revealed to be the Thunderbolts. The early guesses are Osborne as the Iron Patriot, Moonstone as Ms. Marvel, Venom as Spidey, Swordsman as Wolverine, and Bullseye as Hawkeye. I think that is possible, but I'm hoping that isn't the case. With so much potential in Diggle's first issue of Tbolts, I want to see him keep those characters in his own title.
I'm actually hoping the lineup is what it seems. If Osborne gets a high-ranking job, then Ms. Marvel and Iron Man may very well switch sides and go underground. This could be part of a new underground team. We have seen that Ms. Marvel is out to get Osborne post-SI in her own title, so I think it is possible.
Most importantly, if the characters are who they appear to be, that would mean we're getting Hawkeye back. I'd put up with most any concepts or story concepts to get him out of that silly ninja suit.