Following that we had heard back from a press representative at S3 Graphics and in fact they are working on a new Linux driver and that by mid-December there would be a beta OpenGL 3.0 Linux driver on their web-site.
Well, it's nearing the end of December and this morning a new press release hit our inbox entitled "S3 Graphics Unleashes Full OpenGL 3.0 API Support with Beta Driver for Chrome 500 Series GPUs." Sure enough, they have a beta OpenGL 3.0 Linux driver as well as a version of CyberLink PowerDVD software that works with the Chrome 400/500 series, but it's Windows-only.
Checking out the S3 Graphics web-site there still is no driver at all for the Chrome 500 series. The Linux driver they offer for the S3 Chrome 400 series is crippled to say the least. The Chrome 400 Linux driver was updated a month ago (v14.02.01), but its OpenGL support only extends to version 1.5 (Editor's Note: on the Chrome 20 series), there is no support for CPU architectures besides Linux x86 (not even x86_64), Compiz isn't supported, and its only compatible with older Linux distributions. That's just a few of the problems.
We're now waiting back to see what S3 Graphics has to say about their Linux support.