The Ratchet and Clank Future: Tools of Destruction demo has been completed for some time now, however, it will not see the light of day until closer to the launch of the game, which is on October 27th 2007. According to Jennifer Clark, Senior PR Manager, the demo will be available to download from the PlayStation Network Store just before the game launches. This is despite many complaints about the lack of content and playable demos on the PSN Store.
The release date for the demo has not been confirmed, but more details should be available soon.
[Via: PlayStation.Blog]