Great...so now they will just update the system and make it as shit as the Xbox 360 BIOS/firmware you are forced to use to make sure nobody can have any fun at all
I guess you didn't RTFA.
We now have Sony's private keys that they use to sign the games you buy in the shops.
We can now sign our own homebrew demos/games/OS's using their keys and run them on unmodified PS3's as if they were signed by Sony.
No firmware update can do anything to stop this without rendering all previously released titles unusable.