Sony Computer Entertainment released a new update for the PSP, version 3.50. The new update brings Remote Play to the PSP.
Remote Play will allow those who own both a PSP and Playstation 3 to access media stored on their PS3 on their PSP over a WiFi connection. Remote "media" would be a more suitable name for this, because there is no support for playing your games from PS3 on your PSP.
The 3.50 firmware brings a new RSS Channel Guide, which should make the RSS experience even better. The new update can be downloaded directly to a PSP system using a WiFi connection or downloaded to a PC from the Playstation webpage and transferred to a PSP via a USB cable.