Marvel's official website for "Avengers: Age of Ultron" has launched. The barebones site prominently features the new Ultron-ized Avengers "A" and a looped clip of percussive music. It's unclear whether or not the track is from composer Bryan Tyler's "Age of Ultron" score.

The site's sidebar includes tabs for the trailer, downloads and a synopsis. The trailer featured on the site includes the Stark Tower party prologue that originally debuted during an episode of "Agents of S.H.I.E.L.D." back in October. The downloads section features wallpaper of the "Ultron" logo ready for use on computers, phones, tablets and more. The synopsis tab includes the following text, which Marvel previously released back in September:

Marvel Studios presents "Avengers: Age of Ultron," the epic follow-up to the biggest Super Hero movie of all time. When Tony Stark tries to jumpstart a dormant peacekeeping program, things go awry and Earth's Mightiest Heroes, including Iron Man, Captain America, Thor, The Incredible Hulk, Black Widow and Hawkeye, are put to the ultimate test as the fate of the planet hangs in the balance. As the villainous Ultron emerges, it is up to The Avengers to stop him from enacting his terrible plans, and soon uneasy alliances and unexpected action pave the way for an epic and unique global adventure.

Marvel's "Avengers: Age of Ultron" stars Robert Downey Jr., who returns as Iron Man, along with Chris Evans as Captain America, Chris Hemsworth as Thor and Mark Ruffalo as The Hulk. Together with Scarlett Johansson as Black Widow and Jeremy Renner as Hawkeye, and with the additional support of Samuel L. Jackson as Nick Fury and Cobie Smulders as Agent Maria Hill, the team must reassemble to defeat James Spader as Ultron, a terrifying technological villain hell-bent on human extinction. Along the way, they confront two mysterious and powerful newcomers, Wanda Maximoff, played by Elizabeth Olsen, and Pietro Maximoff, played by Aaron Taylor-Johnson, and meet an old friend in a new form when Paul Bettany becomes Vision. Written and directed by Joss Whedon, "Avengers: Age of Ultron" -- the sequel to 2012's "Marvel's The Avengers," which grossed more than $1.5 billion in worldwide box office -- is scheduled for release on May 1, 2015.

As the synopsis states, "Avengers: Age of Ultron" opens on May 1, 2015.