I received the email about the beta (along with my key) last night. I set it to download and decided to wait until today to play.
So far, after several hours of just going back and forth to check... the servers continue to stay "down". Single player mode is essential unless you guarantee server uptime.
I'm an avid SimCity player, been playing since 1.0... however, this experience already has me grumbling and I haven't seen anything beyond the title screen! Infrastructure has problems, we all understand that especially for a beta release. However, I see nothing official from Origin telling us "why" it's down or that it's even acknowledged! Crazy.
Tim