I can't wait to try these drivers, I just finished upgrading to the latest -STABLE, and can't wait for this XFree upgrade to finish. This is a huge step forward towards making FreeBSD a viable desktop machine for many more people. For anyone having trouble I found a site
with some information on specific problems with games and how to work around them.
I believe he was just trying to point out a typo in the README. it refers to "your linux distribution" then goes on to mention FreeBSD 4.7-STABLE is required, seemingly implying FreeBSD is a linux distribution which it is clearly not.