The Hawk first entered service with the RAF in 1976, both as an advanced flying-training aircraft and a weapons-training aircraft. The Hawk T1 version is currently used at RAF Valley for fast-jet pilot advanced flying training with No 208(R) Squadron, and at RAF Scampton by the RAF Aerobatic Team, the Red Arrows.
Source: The Developer Website.
The Hawk is no longer sold. It's removed from the game website. It's still on Steam, as "HAwk for DCS World" but with "N/A" as listed price; no option to buy. Apparently the developer VEAO Simulations broke with Eagle Dynamics and abandoned this project. Not "Vaporware" entirely, as it has been sold in the past as a finished (albeit buggy) product.