https://www.pcgamer.com/valves-vr-h...ZsHaYjtGEgRc0l8t_3yKLG8NsS-cq17qJRRqJSpE3Dg0k
Not much info about value's VR headset, only that they're calling their Vr headset Valve Index, Upgrade your experience and May 2019.
I would assume somewhere in may is when they launch their new VR headset to the market.