EDIT: Seems like developing consensus is that these ARE actually Inceptor models (at least the circled ones). Mods, feel free to close and delete.
As pointed out by Brother @Bouargh in the "10th trailer" thread, from today's WarhammerFest article:
Don't think those are Inceptors - they're in a squad of five, for one thing.
Also, there appears to be another Jumpy squad right in front of them (our left) and another in front of the vehicle towards the