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The New Balance patch brings many improvements to the game, one of these: Tech Tree rework. Many tanks (92) were removed to reduce clutter in tech trees, to simplify the grind. Many low tier and some top tier vehicles like AMX 30B & 30 Prototype, Jagdpanther 2 and T-62A were removed from tech trees. Don’t worry, most of the removed vehicles will become reward tanks and be available to those who own them and also be featured in the future as event rewards.