I also really like how the light-based Forerunner weapons form together as you pick them up. I wonder what the Forerunner/Promethean connection is? I mean, its a Forerunner world with Forerunner weapons, and the Prometheans referred to MC as "Reclaimer", so there's got to be some connection.
All I know is, I really like the way these guys are looking. I wonder what the big orb is?
EDIT: Oh, wow. Prometheans
are Forerunners? Their tech looks very different. I wonder why they're using those animal looking AIs rather than Sentinels...?
EDIT 2: E3 B-Roll footage, including a first look (I think) at Spartan Ops:
http://www.youtube.com/watch?v=9lPDsgyRSv0#ws