What are these Custom Challenges i keep hearing about?

Games Other Halo
1

You can make your own challenges?

2

You can make your own challenges and share them with friends. You can download and upload them too and if they are popular enough, they may become a regular challenge worth cR.

This one doesn’t know if the option is available now, i am just going off what’s been said at Halo Fest and the recent video talking about ATLAS and the custom challenges.

3

You can keep speed running Nightfall SLASO to rank up quicker than a Grifball booster. Yep, I said it.

4

Here is an article that explains some of the new stuff just announced. http://www.gamasutra.com/view/pressreleases/78619/ldquoHalo_Combat_Evolved_Anniversaryrdquo_ReimaginesClassic_Map_Hang_lsquoEm_High_and_Introduces_New_KinectIntegration.php