As evidenced by this image, Skype is listed under the PSP's system features on the site. The software, which permits users talk to other Skype users for free and supports true telephone calls at a cost, was previously unannounced for the PSP.

Skype will likely be included in one of the PSP's frequent firmware updates, which sporadically add new functionality. Sony has previously released a microphone for the portable, with microphone-equipped camera on the way as well.

The 2008 Consumer Electronics Show runs from January 7 to 10 in Las Vegas. A formal announcement is expected then, though Shacknews has contacted Sony Computer Entertainment for clarification.