Apparently, Ratchet & Clank: A Crack in Time (one of my "must have" titles this fall) won't just be getting a downloadable demo... it will be getting two!
In the latest episode of Insomniac's Full Moon podcast, community manager James Stevenson dropped the bomb. The developer had original intended to release one demo with two parts -- Ratchet gameplay and Clank gameplay. The problem is that it was simply too much to cram into one download, so each of the buggers will get their own demo.
With the game out on October 27, we should see the demo a few weeks prior. My suggestion to Insomniac is to also release a third demo featuring A Crack in Time's space gameplay. That's a good idea, right guys?