Sony have announced a multiplayer beta for Killzone 3. Catch is, you have to be a PlayStation Member. Catch is, you have to be among the first 10,000 to download the Killzone 3 XMB Theme from the PlayStation Plus section of the PlayStation Store that will be available on October 14.
It's slightly easier for PAL territories where the first 10,000 subscribers to PlayStation Plus will be eligible to participate.
The beta will be available on October 25 and will feature the Operations game-type, jet packs and exoskeleton vehicles. Guerilla are asking that players provide "honest gameplay feedback, report any bugs and cheats they find, and help test the network code in large-scale, real-world scenarios".