GTX Q4 1.0.1 for Mac OS X and for Windows is now complete at 100% (still no Linux edition..)
The 1.0.1 is a new version of GTX Q4 that includes a little bug fix, introduced with GTX Q4 1.0.0, the bug occur when you change the advance system GTX's settings and restart the game, any change return to default. Now this problem is fixed and you can use the main menu GUI to set your GTX quality level ;)
You will be able to download GTX Q4 1.0.1 for Mac and Windows from the official web site in 24/48 hours, and some day after from moddb and other web sites.
Thanks for your patience :)
UPDATE: GTX Q4 1.0.1 is now available for download from Xtreme-lab.net ;)