New PS3 firmware nukes Linux

Owners of the older, “fatty” PS3 model who install the latest v3.21 firmware over PSN will no longer be able to house Linux or other operating systems on their console. The firmware, which will be sent out from 1 April, will overwrite foreign OS’s for “security reasons” that Sony has yet to explain. As far as we can tell, there is no April Fool’s trickery at play.
PS3 owners who choose not to install the new firmware will be unable to access the Playstation Network.