The final hidden vehicle introduced in Update 1.11.1 is the German Tier VIII Premium medium tank Kampfpanzer 07 RH.
The vehicle didn’t receive any changes from its last Supertest iteration and will be the first German vehicle to feature an oscillating turret, if you can call that a turret.
The frying pan German medium, like some call it, still features very weak firepower while boosting nice mobility. No details for the future of this vehicle, but my suspicions are the vehicle could very well be the first marathon vehicle of 2021.
More information once I can confirm it. For now, here’s a gallery with the vehicle final model and a complete list of its characteristics.
All characteristics are with a crew trained to 100% and subject to change before the final release.