Giving this thread a bump, there's an event happening this weekend (starting the 17th) and I was given three beta invites to pass out. I got my invite here so Ill pay it forward. Looks like I gotta enter email addresses for the invites to be sent out to them so if anyone is still interested in this, the first 3 PM's with email addresses gets an invite.
Not sure if these are permanent beta invites or just access during this event, but if you're wanting to try this out, I guess it's a good time to do it.