A first public version of Kernel 2.6.12-grml is available. It includes support for reiser4, vesafb-tng, squashfs, mppe/mppc and iteraid:
mika@grml ~ % uname -a Linux grml 2.6.12-grml #1 SMP Mon Jun 20 15:20:40 CEST 2005 i686 GNU/Linux
The debian-package plus several modules built against 2.6.12-grml are available online.
I'm working on a (better) framework for the grml-kernel (using dpatch+debian/...). Expect to find broken-out (d)patches and some more information on grml.org/kernel-devel/ soon. Feedback and help welcome!