https://www.pcgamer.com/valves-vr-headset-will-ship-in-june-according-to-unfinished-steam-page/

A photo from the now-removed Steam page for the Valve Index.

An unfinished Steam page for the Valve Index has appeared, and it says the Valve-produced VR headsets will ship on June 15. (The page has since been removed, but you can catch a screengrab here.)