According to IGN (citing PS Blog) there will be a new firmware update for the PS3 in just a few days. (2.0 to be exact)
Highlights are being able to use your PSP to turn the PS3 on/off, an in-game ticker option which tells you of newly available downloads while you are playing, and the ability to customize your theme.
There are other features such as custom playlists for music and photos, but there isn't really much detail about anything.
IGN also denounces that this update will involve PS Home.
IGN: PS3 Firmware Version 2.0 Announced
http://blog.us.playstation.com/ (Couldn't find a permalink, but it's the newst article at the minute)