- The planet that Halo 4 takes place on is called Requiem, it was first seen in the Halo 3 Legendary ending
- The Covenant are still enemies, but it is likely it is just a radical sect of them, rather than the whole Covenant
- Cortana is nearing the age where AI's tend to get a bit psychotic and start questioning themselves
- Master Cheif will have more of a character this time
- Multiplayer ties into the story, the matches take place on the human ship's holodeck
- There will be a new enemy
- It takes place 4 years after Halo 3
Here's some concept art of Requiem
This is the UNSC Inifinty, the largest most advanced human ship in the fleet
