Gangland.Org has a post from Xatrix' Greg Goodich that mentions plans for a full demo prior to the non-interactive demo release. Here's the lowdown:

It looks like we will most likely release the demo prior to the release of the non-interactive movie.

Let me explain why...

The demo is in its final stages now and will be ready for release very shortly. It will include the entire first episode and will most likely be quite large.

Non-interactive movie trailers in gaming serve a few purposes. The first is to generate excitement about the product (in the fan base) before an interactive demo is ready and the second is for retailers to play on the video monitors in selected outlets. Unfortunately for us, the movie trailer we want to show you folks is much different (content wise) then what would be allowed to show in retail outlets. Also, Sony/Columbia will not allow us to "give away" an entire song for free.

The result of all of this is that we have decided to get the demo out first in its "raw" and "un-censored" way and then follow it up with the movie which has been edited for viewing in the retail outlets.