Pete Parsons Machinima Interview
http://www.youtube.com/watch?v=8DFuPZmbZag
Some interesting content in this one.
* Weapon cusomization (cosmetic) stuff is basically confirmed.
* In terms of size paraphrased: Each of our destinations, is probably about 2/3 the size of Halo reach. So far we have 4 confirmed destinations (Earth, near Russia, Venus, Mars, the Moon), and a set of smaller places, so we are talking at minimum double a halo game, possibly more. He also hints that it's dense content, but downplays the amount of exploration.
* That whole Vista scene in the Demo at the start is play space. Crazy stuff.
* standard narrative is going on, and you can jump off, or go back and revist spaces, etc
* He dances around flying spaceships...