Released on the OEM Hercules site today was version 3.18 for 3D Prophet Kyro boards.
Click for more details and link.

No details on what it fixes or improves on as of yet.
Readme contents: BIOS 3.18 for all 3D Prophet 4000 and 4500. This update might be run from Windows. Run Wflash.exe and follow the instructions.

Download here

Try @ your Own Risk Update: Users reporting that they have some bad problems with this bios. You can get more informations over here