So if Kvyat isn't confirmed for next season this weekend, he's surely getting dropped by Red Bull? Dutchie F1 insider says Verstappen will replace him with the announcement coming at the US GP.
I think there is very little doubt that this will happen.
But I doubt we will see any driver announcements before the engine deals are done. Technically RB are still "leaving the sport" so it doesn't make sense to announce 2016 drivers.