I have downloaded and installed the beta.
I got an error message a few times when connecting and my system even froze once, but it looks like I'm in now. =P
Well, nevermind, it was working for a few minutes and then it kicked me back to the start menu saying that I had been disconnected from the PSN, but I am still connected and now it is giving me the error again, ugh.
(Error Initializing Session Manager)