Sony has announced that all EU PS Plus members can take part in the Killzone 3 BETA by downloading the KZ3 beta client. NO strings attached.
This news come as part of the treats that they have announced for PS Plus members.
This is however only for a limited period of time and you need to download the the client during today. Sony won’t be sending out anything informing you about this, so you better be quick.
Killzone 3 releases in Feb 2011 for PS3.