A FAQ for the multiplayer closed alpha for DOOM reveals the schedule for this upcoming testing of the shooter revival, which will begin this week. As was previously announced, the test is being offered to those who purchased Wolfenstein: The New Order before May 26, 2014. They offer the following outline of the schedule, which may have been posted a while ago, but it has not been noted here (thanks Rockn-Roll). Word is:

WHEN IS THE DOOM® MP CLOSED ALPHA?

Start: Thursday, December 3, 2015 @ 10:00 p.m. Eastern Time (UTC - 5)
Burst test: Saturday, December 5, 2015 @ 4:00 p.m. Eastern Time (UTC - 5)
End: Sunday, December 6, 2015 @ 11:59 p.m. Eastern Time (UTC - 5)