By the looks of things the general populous of these forums are wiser than to fall for such a ploy but I recieved a message via my PS3 account the other day inviting me to the beta, the user name was home_beta and asked for my email and password in exchange for registration info to the beta of home. It was full of spelling mistakes and such, and obviously a scam, if anyone else out there sees it, beware. Sony will never ask you for your password, so dont give it out.
There is no way into the Home Beta without being invited. You can download the pkg file and install it via the proxy ps3 method, but it will not sign you into the servers as the logins are managed by Sony and only invites get connected. Just have to wait like the rest of us poor saps.