Version 1.70 Beta 2 which you played was only a concept map of version 1.70 and it has been reverted back to version 1.69d due to many bugs found, thefore we need to wait for true 1.70 beta which is being made right now.
Check often youkaiz's blog @ http://youkaiz.blogspot.com/ for new info about official Angel Arena Allstars v 1.70 informations.
Cheers!