Radeon HD 2000 generation will get a new driver. Despite that everyone believes that the 8.361 will be the final one there will be another iteration scheduled for May.
The new driver is in the release candidate phase today and should be ready with its WHQL signature in May.
ATI calls this piece of software 8.37 and this driver will be the first one to enable the audio capabilities. This driver is planed for both Vista and Windows XP.
We are not sure when ATI will make a Linux driver for this card.