I'm sure that everyone has heard the news. The actual cryptographic keys for signing PS3 software have been cracked, and a firmware modification has been released. This negates the dependency on the USB exploits and makes it so that anyone can install a patched firmware update that the console will recognize as authentic. Changing the keys is supposedly impossible, as it would render all existing software invalid.
http://www.engadget.com/2011/01/06/p...es-piracy-not/
However, there's really nothing to run at the moment. Packages need to be signed with the keys, and nobody has released signed binaries as of yet. I haven't installed the CFW on mine yet, but I am likely to when a build of DOSBox or something is available for 3.55.