After a new Linux driver 12.01.01 for Chrome S20 Series (as well as GammaChrome and DeltaChrome), there's also a new Vista driver 7.15.12.0363 for Chrome 400 and Chrome 500 Series, which is already on the server but not on the homepage yet.

The Chrome S20 Linux driver is mainly a bug fix release with support for newer distributions, have a look at the Release Notes. The new Vista driver for Chrome 400 and 500 Series brings more MultiChrome profiles and also bug fixes. The Release Notes are also available.

All drivers are available in our Download Archive 

Links:
Release Notes for Linux driver 12.01.01 (Chrome S20 Series)
Download Linux driver 12.01.01 (Chrome S20 Series) 
Release Notes for Windows Vista driver 7.15.12.0363 (Chrome 400/500 Series)
Download Windows Vista 32 Bit driver 7.15.12.0363 (Chrome 400/500 Series)  
Download Windows Vista 64 Bit driver 7.15.12.0363 (Chrome 400/500 Series)