The system requirements were announced as well:
Linux x86 with X11 installed and glibc 2.2 or better.
Minimum: 1 GHz processor, nVIDIA GeForce 4 series or Radeon 8×00/9×00, 256 MB RAM, 900 MB HDD.
Recommended: 2 GHz processor, nVIDIA GeForce FX series or better, Radeon 9500 or better, 512 MB RAM, 900 MB HDD.
Ankh is now also available for international pre-orders at Tux Games.*Update*
Well what do you know? According to comments over at Holarse Ankh shipped already on December 22. Although quite buggy.