• Type 74 - rate of fire increased from 7 to 9 shots  per minute. Source: Japan Defense Agency (September 5, 1974), 仮制式要綱 ７４式戦車 ＸＤ９００２ [Construction summary, Type 74 Tank, XD 9002], Japan Defense Agency.
• 120mm L15A3/L15A5 - penetration values have been corrected. Penetration at normal considerably reduced. Penetration at 60 degrees angles has been increased. Source: DEFE 15/1183 //  DEFE 25/576 Future Tank Policy (Pre and Post 1995) // DEFE 70.207 Replacement of Chieftain Tank (Future Main Battle Tank - MBT 80) policy
• 120 mm L23A1 - penetration values have been corrected. Penetration at normal considerably reduced. Penetration at 60 degree angles have been increased. Source. Challenger db
• Challenger - tank armour and protection updated. For more information see devblog.
• Challenger - name corrected to “Challenger Mk.2”
• T-64B - a bug with reduced protection value of the hull and turret has been fixed. Source  "Защита танков" ред. В.А. Григорян изд. МГТУ им. Н.Э.Баумана // Частные вопросы конечной баллистики" ред. В.А. Григорян изд. МГТУ им. Н.Э.Баумана // Репорт -
• Accuracy has been corrected for the following guns:
  • 100-mm D-10Т/S/Т2S
  • 105-mm KwK L/68 cannon
  • 105-mm CN105 F1
  • 105-mm L7 and modifications
  • 105-mm M68 and modifications
  • 115-mm U-5ТS
  • 120-mm GIAT CN120-25 G1
  • 120-mm L11A5
  • 120-mm Rheinmetall L/44
  • 120-mm Type 90
  • 125-mm 2А26
  • 125-mm 2А46М-1
  • 152-mm XM150E5

Previously these guns had a spread over 1 mRad at 1000m distance. Now the spread has been corrected to 0.38-0.5 mRad at that distance. Sources: ARTILLERY DIVISION REPORT ON EVALUATION OF PREPRODUCTION SHOT, APDS, 105-MM, M392A1 FOR M68 GUN (U) AD0317307, REPORT NO. DPS/OAC-I/60/2 JUNE 1960 // PERFORMANCE OF CHROME-PLATED 105MM M68 GUN TUBES WITH DISCARDING SABOT AMMUNITION ADA031639 September 1976

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.