I could be wrong, but I think unified is for Rage and Radeon cards...but if you are looking for "Radeon only" drivers, they are already releasing thing in a pretty timely manner.
If you mean drivers that will push the Radeon to the limit, probably not in a while. Look at how long it took Nvidia to tweak the Geforce drivers to what they are now, and the Geforce 2 is based on the Geforce which is based on the TNT2 and in turn based on the TNT...=)