RadeonHD v3 is part of the forthcoming Enhancer Software 2.0 package which is a chargeable upgrade.
As the driver is completed I will enable a Radeon upgrade pack before the V2.0 release so eager users can use the Radeon driver now. Then anyone that pays for the Radeon pack will later on receive the Enhancer Software V2.0 free of charge as a download on Updater tool.