Marvel will release Avengers: Loki Unleashed #1, written by Roger Stern with art by Ron Lim, in September.  Billed as an "80th Anniversary Special" the one-shot will pay tribute to Stern’s run on the title in the 80s.  The cover is by Patch Zircher.

Set after the Siege of Avengers Mansion, the story has Loki finding a new source of mystic energy that connects to another classic villain, all at the worst time for the Avengers, who are battered and in disarray.

This special issue is only a small part of the publishing program for Marvel’s 80th anniversary celebration, which kicked off at the beginning of the year (see "Marvel Reveals More of 80th Anniversary Celebration").