Gran Turismo 6 most likely to be on PS3 rather than PS4?

If you take a look at this picture of the Gran Turismo 15th anniversary event from PlayStation France's website you can see a PS3 logo in the upper right corner. This probably means there will a PS3
announcement at the event. I would be shocked if it's not Gran Turismo 6.

sources: http://www.actiontrip.com/news/sony-confirms-gran-turismo-6-reveal-for-wednesday-ps3-release-further-hinted/051113_4

http://fr.playstation.com/