Support (including acceleration) for the ARK1000PV, ARK2000PV, and ARK2000MT is provided by the XF86_SVGA server with the ark driver.
Support (including acceleration) for the ARK1000PV, ARK2000PV, and ARK2000MT is provided by the "ark" driver.
All hardware supported in 3.3.6 is also supported in 4.2.0.