This implies the 911 seen below could be a custom model that was commissioned for a special customer, possibly to celebrate 100 years of Le Mans.
The rear bumper design doesn’t differ from other models, and we can’t see any other unique styling details. As such, it’s unlikely Porsche will be revealing the 911 ST, which wears more prominent bumpers and various aero bits. Then again, Le Mans Classic would be an ideal place to reveal the latest special edition 911. If you’re unaware, this model is reportedly based on the 911 GT3 Touring and should debut with a powerful 4.0-liter naturally-aspirated flat-six.
The most likely explanation is that this 911 is, as mentioned, a one-off custom build or a special edition for the French market. It hasn’t been teased on other Porsche channels, so this is very likely.