This articile is from the almighty Wikipedia, its pretty much just about the new CF. Its not that new its been oout since the begining of this month, but Iv'e been slacking so im sorry.
3.72HX-1
On November 06, 2007, homebrew developer "_HellDashX_" released the 3.72HX-1 custom firmware. This custom firmware was made by reverse engineering Dark~AleX's 3.71 M33-2 and the adapting it to the 3.72 firmware. It contains all features from 3.71 M33-2 except the 1.50 kernel extension, which was released shortly after. Also a version 2 called 3.72HX-2 has now been released.
If anyone has installed this please comment about it. I have not used this im still using DA's 3.71 M33-2 CF. Its been good to me so i have felt the need or seen a reason to upgrade my firmware.....comment