Just managed to dig this up. Very interesting.

We wish we knew exactly what's in store here, but we've found some exciting tidbits in Windows 8 that indicate that Microsoft's top-secret new filesystem -- Protogon -- is finally coming to fruition as part of Windows 8.

Windows 8: New "Protogon" filesystem could be the next big thing - Neowin.net

I'm going to attempt to reformat a drive now just for the sake of it

Originally Posted by Brink

Very interesting.

I'm with with this reply too, very very VERY interesting.

Protogon is broken/disabled in WDP.

Re-hashed old news.

The mystery of Windows 8 and the new 'Protogon' file system
How to Create “Protogon” File System in Windows 8 M2/M3

Originally Posted by Dwarf

I've tried this, and I can confirm that it works. Pics to come later. You need to use an elevated command prompt and the /q switch, as shown in the referenced link, doesn't work. The command does work if you omit this switch.

Omitting the /q switch makes the format go through but the resulting drive is unusable. One gets all kinds of errors like unusable drive, would you like to format the drive, filesystem not recognized etc.

However, I think getting hold of a few files from the 7955 build should do the trick, lemme see...