From the PlayStation blog:
Today, we’re happy to announce that the PlayStation All-Stars Battle Royale Beta will kick off for PlayStation Plus members on PS3 tomorrow, October 16th and expand to everyone October 23rd through PlayStation Store! What’s more, as a special treat, PS Vita users will be able dive right into the multiplayer beta starting tomorrow – no Plus subscription required. The Beta will support Cross-Play, so PS3 and PS Vita owners will be able to fight with and against each other.
So what will be in this limited Beta?
- You’ll be able to play as Kratos, Sweet Tooth, Colonel Radec, Sly Cooper, PaRappa, and Fat Princess.
- You’ll be able to play in both the Metropolis and Hades stages.
- You’ll be able to try out four-player online tournaments and 2 v 2 online tournaments. For the 2 v 2 games we’ll be supporting friend invites, so you and a friend can fight another team online.
For Europe, the beta opens for PS+ people on the 17th and for the rest of PSN users on the 24th.
Also, they've revealed the rest of the pre-order bonus costumes:
I'm excited for this. I've been getting less and less interested in this game and I'll finally be able to see if I like the way it plays or not. The game comes out on the 20th of November, so I wonder how long the beta will last for.