I got an email from Colin as you're right, I think hes controlling who he invites now and limiting it to older forums members, rather than being spammed underground by new accounts (pretty understandable!).
Haven't got into the beta yet, but as I said in my response to him, thanks very much for doing this for people, shame it had to get very nearly ruined
Im also looking forward to the guild changes, should promote more social activity, which does seem to have died heavily in many guilds between me leaving over a year ago, and coming back about a month and a half ago.
Edit: Tell a lie, I just logged in whilst I'm at work, wasn't there last night but suddenly I've got a Cataclysm PTR entry on my Battle.net login.
You're a gentleman Colin, Im off this weekend so will definately be taking a looky!
<Dependant on having to redownload the entire client and not being able to copy and patch the pre-existing version haha>