With the release of Windows 10 today, AMD has made available a minor update to its Catalyst drivers, version 15.7.1. This driver provides support for Windows 10 as well as full WDDM 2.0 and DirectX 12 support which is available on all AMD Graphics Core Next (GCN) products, – AMD Radeon HD 7000 and newer graphics products. The new 15.7.1 Catalyst drivers also include a number of bug fixes. For more information, check out the release notes here.
You can download the AMD Catalyst 15.7.1 drivers here.