It's been previously posted in the Artifact and PC Gaming thread, but now it's official:
He left Valve in March 2017 to work on Overwatch with Blizzard. He previously worked on Dota 2, Team Fortress 2, Half-Life 2, etc.
He left Valve in March 2017 to work on Overwatch with Blizzard. He previously worked on Dota 2, Team Fortress 2, Half-Life 2, etc.