Sony has released the fifth video in its Evolution series ahead of the PlayStation Meeting later today, where the platform holder is expected to unveil the PlayStation 4.

This episode is titled “Changing the Definition of Game,” and focuses on Sony’s role in shaping what video games are today. It discusses the importance of titles such as Gran Turismo, which was used to show off the PlayStation 2 and 3 with launch day demos. A hint at a PlayStation 4 Gran Turismo 6 launch day demo perhaps?

Previous videos have focused on the PSOne, PlayStation 2, PlayStation 3, and PSP/Vita. The PlayStation Meeting is scheduled to begin at 6pm EST.