Remember it's an SCEE employee's personal twitter account, not a formal company announcement. It certainly sounds more likely to be 3rd party. But if it was 1st party, it would be a either an SCEE franchise, or a European concentric title to be being discussed in Europe first.
Ubisoft are French, Rockstar North/Leeds are British. Gran Turismo is most successful in Europe. So the sorts of ones that are more likely to be announced from Europe than such as Square Enix/Atlus/Activision titles.
He also says "Talk about one title doesn't preclude others" suggesting a further title in a franchise already due for a release in the near future.








