Besides the GPS for the PSP Sony also announced a EyeToy like WebCam for the Sony PSP dubbed PSP-300.
The Sony PSP-300 will support VOIP and video chat. This would mean the camera has a microphone built-in. The Sony PSP webcam is supposed to ship in October. No pricing information is available yet. GameSpot has a photo of the PSP camera from the slides shown at the Sony Business Briefing.The Sony PSP is also supposed to support Macromedia Flash 6 and an emulator to play PSOne games is supposedly in the works too.
More details on the Playstation site and in this Sony press-release (Japanese).
Sony PSP Deals.