Sony opens up on Home

First and foremost, the Home closed beta is scheduled to kick off in April with 15,000 users. This first stage of the beta will run through August, at which point it will enter the open beta phase and open up to approximately 50,000 users. The free service, which Sony is trying to get under 500MB in size, is scheduled to go live in October.
The Central Lounge, which is a starting point for virtual meet-and-greets, will have a cap of 64 concurrent users. Like online chat rooms, there will be several active Central Lounges on the network to accommodate users.
Though currently PS3-only, Sony is hoping to expand Home to be accessed by the PlayStation Portable and mobile phones, but admits it will be limited access. Sony did not say what features will be accessible or when other devices could connect to Home.
Sony opens up on Home – News at GameSpot