Source
OFFICIAL release date.
Also, some ingame photos;
Finally, preorder bonuses for ones that have purchased a Valve Index. They will “roll out the week of March 2nd.”
-SteamVR Home environments themed of the game.
-Free copy of the game
-And more to be announced
(At least they better release more, as it’s over $1,000 to get the headset)
They plan to also announce when new Valve Index’s will roll out of the factory, ‘soon’™.