Some Alpha tester post this in the Forum.
Awesome, how did you know that? If you don't mind me asking that is.
"It has been on alpha for approx. 6 hrs" Posted at on 25. April 2012 11:39
And from a Forum Moderator:
"Alpha is about major issues. That includes client instabilities but it also covers general balance of new content. It's about getting as much feedback on the patch as possible while it's still in an unfinished state.
Also, there's a ton of new shit coming this patch. Some features (like totems and the prison necromancer) have already been confirmed but there's a bunch of other secret stuff as well. It's a big patch (~950mb and not everything has been included yet). As always, content may need to be removed at the last minute if it's not fit for general beta testing. These patches are exciting because you can feel the game getting closer to Open Beta."