As one of the happy few I'm pleased to announce the multiplayer alpha test for the new Doom title will start December 4th. More info: http://doom.com/en-gb/alpha
According to the e-mail I got, it's the same. Same map, weapons, items, power ups... everything. Most likely just improved and a bit more polished.
I am located in Europe though. Perhaps that could be an explanation ? Not sure if they roll out testing globally at once...