I've attempted to update the Wikipedia entry for MagicLantern over the past year or so:
https://en.wikipedia.org/wiki/Magic_Lantern_(firmware)
There are several {{citation needed}} warnings, and some information I believe to be accurate has been removed.
- A version for the 6D is available, but less fully supported because none of the principal developers own the camera.[citation needed] Still true? Or is the 6d now a "1st class supported camera?"
- A version for the mirror-less EOS M is less mature than fully supported cameras that one or more of the principal developers own.[citation needed] Still true?
- Project policy is to not develop a version for the pro body 1 series like the 1Dx.
- LensRentals.com has Canon 5d3's available with Magic Lantern installed.
For 6D: http://www.magiclantern.fm/forum/index.php?topic=3904.0
I think there are a couple of people doing some work on EOS-M, but I don't recall who. dmilligan just got an EOS-M and is rather active, so I assume he will show the EOS-M some love. Whether that extends to maintaining the camera though...........
Pro stuff: http://www.magiclantern.fm/forum/index.php?topic=4236.msg23636#msg23636
Lensrental: https://www.lensrentals.com/rent/video/cameras/canon/canon-5d-mark-iii-magic-lantern-raw-hack-kit