Newsarama has the scoop. Read pages from the Exiled crossover prologue.
Although I'm skipping this in the monthly format (limited budget), I think I'll definitely be giving it a look in trade.
I had no idea what the history of Disir was, but I can see how this might have fallout in the upcoming Thor/JiM crossover. What will the Aesir do when they find out about Loki's machinations?