It was only rumoured on Monday, but Sony’s put a minor Firmware update live overnight. Firmware 2.36 is supposed to be just a stability fix, and doesn’t appear to add any significant functionality at all.
Firmware 2.36 headlines
According to this SixthAxis report, a pre-Firmware 2.40 PS3 update may be released. Apparently named 2.36, the release is a small one designed to strengthen security and apply fixes to a few titles. Nothing major.