Confirmed:
🇬🇧14 Challenger 2
🇵🇱14 Leopard 2A4
🇩🇪14 Leopard 2A6

Awaiting full confirmation:
🇵🇹4 Leopard 2A6
🇪🇸 20-53 Leopard 2A4
🇺🇸30 Abrams M1
🇳🇴8 Leopard 2A4
🇫🇮 14 Leopard 2A4/6

Discussing:
🇳🇱18 Leopard 2A6
🇩🇰6 Leopard 2A5/7

Also an unknown amount of 🇫🇷 Leclerc tanks is discussed