We knew back in November that Tracer, of the upcoming Overwatch, would join the roster of Blizzard's MOBA Heroes of the Storm. Now we know it's this month, as many as two weeks before Overwatch's open beta gets underway.
Tracer is being offered as a preorder incentive for the Overwatch: Origins Edition on Windows PC; anyone buying a copy of that will get her in Heroes of the Storm on April 19. The rest will be able to buy Tracer in the Nexus beginning April 26. Overwatch's open beta begins May 3, and the game launches May 24.
For more on how the pistol-packing dual-wielding sharpshooter plays within Heroes of the Storm, Blizzard put out the following introductory video over the weekend.