If a set of screengrabs are to be believed, May has just become a bit busier with the release of Overwatch. Redditor Deadpoolthegreat claims to have snapped some ads giving away the big day that appeared briefly on the IGN site. Both mobile and desktop ads suggest that Overwatch will be with us May 24, with early open beta access for pre-orderers beginning May 3.
It seems plausible—we already know that Overwatch is to release in spring. Exercise caution until the dates are confirmed by Blizzard, however. Static ads are too easily faked, and a quick Google search for Tracer (appallingly NSFW) reveals that the asset used in the ad is already out in the wild.