It is NOT a new tank. The Challenger 3 are an upgrade of the existing UK Army 148 Challenger 2.
https://www.msn.com/en-us/news/world/analysis-how-good-is-challenger-3-the-british-army-s-new-main-battle-tank/ar-AA1ngzLG?ocid=msedgdhp&pc=U531&cvid=50bcdb0105eb46 74c0c62fa339446a61&ei=40
I hope to see some 1/16 scale Challenger 3 upgrade in the near future. It should not be too difficult to scratch build. Hopefully, there may be 3D printed kits too.
https://www.msn.com/en-us/news/world/analysis-how-good-is-challenger-3-the-british-army-s-new-main-battle-tank/ar-AA1ngzLG?ocid=msedgdhp&pc=U531&cvid=50bcdb0105eb46 74c0c62fa339446a61&ei=40
I hope to see some 1/16 scale Challenger 3 upgrade in the near future. It should not be too difficult to scratch build. Hopefully, there may be 3D printed kits too.