The Next War Supplement 3 Expansion is the third Next War supplement will contain the following items:

• An expansion map containing the rest of Kaliningrad and a larger portion of Lithuania including the strategically important railroad connection.
• Optional expansion map which depict the islands of Bornholm and Gotland as hex based maps as well as rules to integrate them into the game.
• Two counter sheets containing additional and updated counters for most of the nationalities in Poland including:
  • New and additional ground OOB for Russia
  • Typhoons w/ Meteor
  • Additional ground units for Poland
  • Belgian F-35s
  • US F/A-18s w/ AMRAAMs
  • Belarus Su-30s
• Additional counters for other games in the series including:
  • Indian S-400s
  • PRC DF21s/26s
• Updated ROK Order of Battle for Next War: Korea (either edition)
• Additional counters and Player Aid Cards for revamped Cyber Warfare rules.
• A few optional rules.

Effectively, this supplement is an upgrade kit for Next War: Poland, 1st Edition to the 2nd Edition, but, of course, it also includes goodies such as the additional counters, the ROK OoB, new Cyber Warfare rules, and assorted other optional rules.