Marvel.com has released this teaser image for its forthcoming ‘Dark Reign’ closing ‘Siege’ event featuring Captain America opening a briefcase with Tony Stark’s Iron Man armor inside..

No information was given other than the solicitation information below.

Official Press Release

SIEGE is coming! It’s all been leading up to this universe shattering four issue limited series from the superstar team of Brian Michael Bendis and Olivier Coipel! Following the events of Dark Reign: The List, Norman Osborn sets his sights set on Asgard and nothing will stop him from completing his mission. But what does he want? How do Loki and Thor figure in? And just how does this relate to the inner strife between the Cabal? Marvel’s greatest heroes unite against the deadliest threat they’ve ever faced, but even they have no idea what’s coming next. It’s time for the most jaw dropping comic book event of the decade begins in December with Siege: The Cabal and continues in January’s SIEGE #1!

SIEGE: THE CABAL [Prologue to Siege] (OCT090467)
Written by BRIAN MICHAEL BENDIS
Penciled by MICHAEL LARK
Cover by DAVID FINCH
Rated T+ …$3.99
FOC-11/12/09, On-Sale-12/2/09

SIEGE #1 (of 4)
Written by BRIAN MICHAEL BENDIS
Pencils & Cover by OLIVIER COIPEL
Variant Cover by GABRIELE DELL’OTTO
Variant Cover by JOE QUESADA
Sketch Variant by OLIVIER COIPEL
Rated T+ …$3.99
FOC-12/10/09, On-Sale-1/6/10