PlayStation 3 owners will soon be able to download the demo for Gran Turismo 6 as Sony confirmed it will be available at 5:00pm Pacific Time, which also happens to be when the 2013 GT Academy competition begins. Of course, this is also contingent on the PlayStation Store actually updating on time.
Here's what the demo contains:
A quick tutorial that includes tips and tricks on the controls and navigating around the track
Four warm-up races using two Nissan cars, the LEAF and 370Z
Five time trials on the Silverstone track driving the Nissan 370Z, four of which take place on various sections of the track, and one being the full lap. That one full lap time becomes the entry time for GT Academy. Enter as often as you like before 3:59pm Pacific Time on July 28th.