Here are some screenshots I chose that showcase the video. I’ve compilated some due to same or similar references.

First up UNSC Infinity’s size. It’s been said to be both 3.5 miles long and in the video 3.5 miles long. SO which is it??

The Infinity’s holo display:

343 did a great job with this title bar. I wonder if it will be in the game or if it’s just for the vid?

Spartan Ops Screens. These will be in the game, or so I hear.

Here are two shots of the exciting new Lava Base map. (Not the official name):

The lower pic of the lave map reminds me of “Mustafar” from Revenge of the Sith.

More Spartan Ops Screens. This time Credits and Ranking up:

Unlock weapons. (I assuem this is for use in Spartan Ops as the Battle Rifle is readily available in Multiplayer (War Games):

Armor Customization screens.

Note that the upper left corner shows what armor is able to customize:
• Helmet
• Chest
• Left Shoulder
• Right Shoulder
• Arms
• Legs
• Visor

This is the same amount as Halo Reach, however the difference is that in Reach you can change your Wrist attachment and Leg equipment. Whereas, in Halo 4 you can change the armor of your arms and legs. THAT is much MUCH better.