Gran Turismo HD was the first GT game available on the PlayStation 3. First announced at the 2006 Tokyo Game Show, GTHD was originally slated to be a transitional title between GT4 and GT5 in which downloadable content such as cars and tracks could be purchased and eventually used in Gran Turismo 5.
The proposition was not well received and those plans were scrapped later that year, but Gran Turismo HD: Concept lived on as a free demo on the PlayStation Network, released in November of 2006. It featured only 10 cars, but was the first GT game to include Ferrari. It also introduced the Eiger Nordwand circuit to the GT series.