At QauekCon 2015, Bethesda and id Software provided some fresh information with regards to the upcoming Doom multiplayer alpha and beta phases. Keep in mind that the Doom multiplayer beta was really only promised to those who redeemed their special pre-order key for Wolfenstein: The New Order last year.
In the coming months, we’ll be selecting Xbox One, PlayStation 4, and PC players from the Wolfenstein: TNO Beta pool to participate in the DOOM Multiplayer Alpha. To make sure you’re eligible, make sure you redeem your DOOM Beta code at www.wolfenstein.com/doom. If you purchased the game digitally through Steam, PSN, or Xbox Live, you’re already set — you have a digital entitlement that will ready you for the Alpha when it starts.

Again, this group of selected players will be for the alpha. The beta will still be open to everybody that redeemed that key.

(via Bethblog)