http://www.joystiq.com/2010/03/10/onlive-launching-june-17-for-pc-and-mac-15-per-month-service-f/
So it's US only (and doesn't cover all states) and will cost $15 a month including game rental and purchasing? Ouch.
OnLive has announced that its cloud-based game streaming service will launch in the 48 contiguous US states on June 17, 2010. The service will initially be available to PC and Mac owners for a monthly service fee of $14.95. Each game purchase and rental will carry a charge on top of the base subscription.
So it's US only (and doesn't cover all states) and will cost $15 a month including game rental and purchasing? Ouch.