Jerome Glisse has passed along word that version 0.1.0 of the Avivo Driver
will soon be released. This open-source R500 and R600 driver for the ATI Radeon X1000 (and eventually Radeon HD 2000) hardware will have support for some shadow things and will be at least as fast as the VESA driver currently along with a few additional fixes. New PCI IDs for other Radeon R500 parts will also be added in Avivo 0.1.0. Jerome mentioned that this should be a good release for deeper and wider testing especially with RandR 1.2.