Sony announced a Bluetooth headset for the Sony PS3.
With this new wireless headset, PS3 users will be able to enjoy immersive on-line communication on new software titles supporting on-line chat feature, such as SOCOM: CONFRONTATION available on October 30th, Resistance 2 available on November 13th, and MotorStorm: Pacific Rift available this autumn.
The ear hook type headset is designed to fit either ear. Installed with Bluetooth, it pairs automatically with the PS3 by simply using the bundled USB cable.
The bundled cradle can be used to charge the battery which will allow a maximum of eight hours of voice chat when fully charged. While the Headset is connected to PS3, it will support on-screen indicator showing the headset connection status, battery charge level, speaker volume level and microphone mute status at a push of a button.

The PS3 Bluetooth headset CEJH-15002 will go on sale on October 30th in Japan at a recommended retail price of 5,000 yen (~$46). It is not known yet if Sony will offer the PS3 Bluetooth headset outside of Japan.
Via this Sony announcement.