According to the video, "participants in this event will have the unique chance to take the Polish, tier 9, 50TP prototype tank for a spin before anyone else."
If for some reason you're not able to compete in a clan or cannot finish this event, chances are within a year or two, the tank will eventually become available via the shop.
Edited by Markus_The0, 16 September 2021 - 09:44 PM.
It's not the RNG, the MM, the diameter of your shell, the thickness of your armor, or the number of premium rounds you carry that counts ultimately; it's the courage in your heart, the calmness in your mind, the hope and faith you have in your team, and the way you use what's at your disposal that truly determines Victory.