Overwatch Origin Edition was announced at BlizzCon 2015, in the process, the new website BuyOverwatch included a link to Best Buy which gives a release date of "06/21/2016" which is the last day of spring, which either means that they noted the last day of spring as the very last day it could release, OR that's the actual release date. With these things they can be rather sketchy, you never know if it's a legit date or not.

The release date wasn't announced at BlizzCon, but as you can see:

Beyond that the Origins edition comes with 5 skins, goodies in other games, and is available in a physical release on both console and PC. You can purchase it now, over at BuyOverwatch, pricing is established at $39.99 for the base game, $59.99 for Origins, and no pricing released for the physical collector's edition.

Overwatch is an FPS PvP brawler, coming to Windows, PS4, and Xbox One.

Update: The Collector's Edition for Overwatch is currently listed for $129.99 on Best Buy and GameStop (GS also lists the same 6/21/16 release date).