Sorry about the late reply, I went to sleep just after posting that.
New SkyJump glitch.
The dude sent this too me and then I have been messing around with it in the demo.
I've found it only works on area where enemies don't spawn.
When enemies spawn the area locks the entire fighting section, this is to stop people from Demon Jumping out of the map, but since they didn't add enemies on sections like (Limbo crumbling(after you destroy the first camera)) they didn't add a height barrier to the those sections (since there are no enemis and they didn't think you'd be able to get so high with no enemies to Demon Jump)meaning you can get to extremely "glitchy" places. I used it in my video on page 50 to get across the Limbo gap. You can high enough and go over it but the road on the other section isn't a solid object so you fall through it.