Matrox has released (6/6/2006) version 1.10 of their video card BIOS updates for the Parhelia chipsets, as well as version 2.58.002 for the G200, G400, G450, and G550 video cards. Also available (4/9/99) is version 3.51 of BIOS updates for the older cards, which puts the G100 AGP at 1.6, G100 PCI at 1.2, Millenium II PCI at 1.5, Millenium II AGP at 1.4, Mystique at 1.8, and Millenium at 3.0.
http://www.matrox.com/mga/support/drivers/bios/home2.cfm
Source: OS/2 Warp News and Rumors