On the eve of Comic-Con International in San Diego, Marvel has launched the official (if bare bones) website for Joss Whedon’s The Avengers, where you can download a teaser poster emblazoned with the familiar “A.”

Although the studio won’t have a panel for its 2012 tentpole, the film will have a presence at the convention through viral marketing and the enormous Marvel booth on the exhibition floor. Whedon and stars Chris Evans and Clark Gregg will also sign autographs on Thursday and Saturday.

The Avengers, which opens May 4, 2012, also stars Robert Downey Jr., Chris Hemsworth, Jeremy Renner, Mark Ruffalo, Scarlett Johansson and Samuel L. Jackson.