Watch it while it's still up. Nothing major, but some new small details.
0:18 - New type of geth or just a geth with yellow armor (Pyro geth?)
0:32 - Varren attacking a soldier, possible combat pet?
1:07 - Omni-tool powered heavy punch
1:49 - Enemies can flank and use the omni-blade as well.
Also, there was a question in a different thread about where the weapon goes when Shepard use the omni-blade. This video confirms that the weapon simply disappears when he uses the blade. This is not a final build, of course, so it's likely that will change.