• BR changes. Open the full table. 

All the announced rearrangements of vehicles in the tech trees will be applied when the economy update goes live.

• HSTV-L - The operation of the auto loader has been specified. Previously it could shoot 6 rounds before it had to be reloaded. Now the auto loader allows the shooting of all ammunition with no reload required.  Source: report
• Leopard 2A5, Leopard 2PL - round types have been updated. The DM33 round has been replaced with the DM43, the DM23 round has been replaced with the DM33.
• Leopard 2K - the DM23 round has been added.
• JPz. 4-5 - the default M332 APCR round has been replaced with the DM502 HESH round. The M332 round is no longer available for this vehicle. 
• Challenger 2 -  round types have been updated. The L26 round has been moved to the tier I modifications. The L27A1 round has been added to tier IV modifications.
• Challenger Mk.3, Vickers Mk.7 - the L26 round has been added. 
• Centauro I 105 - round types have been updated.The new default round is the M456. The M735 round has been added to the tier I modifications. The DM23 has been added to the tier IV modifications.
• XM1(C), XM1(GM) - turret protection against APFSDS rounds has been improved. Provided protection against 115mm 3BM4 rounds along the course an arc of 60 degrees at 1,000 meters.
• Olifant Mk.2 - turret protection against shaped-charge rounds has been improved. Provided protection against chemical rounds of calibers 100-105 mm along the course arc of 60 degrees.
• TAM-2IP - turret protection against shaped-charge rounds has been specified. Provided partial protection against chemical rounds of calibers 90-100 mm from the front.
• Respawn points cost for helicopters with powerful unguided rockets (S-13, S-24) in ground RB has been changed: basic - 227 RP, minimal - 182 RP.
• MiG-23M, MiG-21bis — as a balance change, the R-13M missile has been replaced by the more advanced R-13M1 with a higher angular target tracking speed, increased target acquisition range, and is also less sensitive to countermeasures
• MiG-23M — presets of 2хR-13М1 supplemented by 2х R-23R or 2хR-23T have been added.
• R-3S missile —  the target capture field has been reduced from 4 to 3.5 degrees, the maximum angular velocity of target tracking has been reduced from 11 to 6 degrees per second according to the basic data on the R-3S missiles from the pilot's operation manual for MiG fighter aircraft.

The current provided changelog reflects the major changes within the game as part of this Update. Some updates, additions and fixes may not be listed in the provided notes. War Thunder is constantly improving and specific fixes may be implemented without the client being updated.