Yes, you have seen their announcement a few days ago and the BIOS are available for download at the website. Does it really work? Here are some screen shots showing a Intel Pentium G4400 processor being overclock to 4.2GHz at 33 x 127MHz. It is able to complete Cinebench R15 test with stability. Previously, only the expensive K processors allows you to increase the BCLK. With the new BIOS, you can now do the same on non K processors on ASRock boards.
Larger version of the screen shots can be found in the ASRock forum.