ichat Leopard and multiple logins?

[sir42]

I was noticing that iChat for Leopard will finally include multiple logins. For those who have seen it, does that mean multiple logins per service (ie. more than one AIM screen name) or just the ability to login to more than one service at at time (albeit with one screen name per service)? I'm hoping it's the former, it's the one thing that keeps me from using iChat currently.