For those eager enough to want to check out the Doom single player mode, Bethesda will be hosting a livestream at April 27 at 2pm ET (for those in America) 4am AEST (Australia)/ 6am NZST (New Zealand) on the 28th of April 2016. It will be archived after it’s all over for anyone to watch at their own leisure.
I’ve placed the stream below for you all to watch if you’d like, or just come back during the day to this page and you should still be able to watch it.