Kind of surprised they're taking it live this soon. Streaming videos don't work, looks like they just straight up removed the option (kind of a big deal on site where video content is the point and their progressive player doesn't allow skipping), and as of last Unprofessional Friday, the live chat still crashed if you breathed on it the wrong way.
I like the new site though, only thing I don't like design-wise is that reviews are now constrained to a fixed width column like news posts and can no longer resize take up the full width of the screen. IMO they're not as nice to read as a result.
Streaming barely works on the current site. It only works with the quality set to auto which almost never picks 720 for me (even though my internet is more then capable of watching 720 with no buffering) so it looks terrible usually.
And the beta site only has a small amount of their total resources devoted to it, which hopefully means the chat won't crash with the full site resources at it's back.