Some of my impression from the live-demo at Quakecon:
The developer who was on hand to present it asked people not to record the video, not that that necessarily means it won't makes it way to the internet anyway. But it didn't sound like anyone was going to stream it.
It looked pretty awesome, by the way. From what I saw, it's like a combination of Mirror's Edge and Team Fortress 2 with some RPG-ness added in. Basically, it's a squad shooter with you and several other squadmates doing missions all throughout a level [you can play single player or online with up to seven people]. There are classes, like engineer, a scout/infiltrator class, soldier, and so on, with each one having a certain advantage that aids in completing the various missions. At any given point there are about six or seven open missions that need to be completed, such as "Gather intelligence by interrogating any enemy" or "Repair the crane" or "Destroy a barrier" that you can perform for experience points, though they didn't really go in-depth about what experience points do for you.
There's also a lot of character customization, similar to what you can do in RPG with various clothes styles, tattoos, headhear, body types and so on.
There's two different factions, basically the police force and the resistance.
SMART system allows you to use the "Sprint" button to climb over obstacles, pull yourself over ledges, and slide under things or slide into cover. This looked to be implement really smoothly, with no glitches and good detection. Nothing was canned, it was all on-the-fly and worked wherever the player wanted to use it.
Graphics were really clean and high-quality, though some of the animations looked a bit stiff.
Classes can be changed at command posts scattered throughout the level. Also at command posts, you can pick up new sets of weapons to better compliment the different classes.