Clues and rumors combined, it appears that Facebook may be launching a new video chat product that is built on Skype and works in a browser.
The new project has been built by the Seattle-based Facebook team in combination with the Skype team. There is a good chance that the new project will have a desktop component--as Facebook has been beefing up desktop development staff in Seattle.
This partnership could be fantastic for Skype. Currently, Skype supports 170 million users, but this new (possible) partnership could push Skype usage above 750 million users.