Many sad owners of the Kanonenjagdpanzer expected to be ignored by WG when the upgraded version comes out, but NO, WG made a really good offer for current owners!
If you already own the first Kanonenjagdpanzer, you have two options:
Option 1: get the new Kanonenjagdpanzer 105 to a 50% discount until 23 October via this link. And the best thing? No Premium Account required!
Option 2: exchange your old Kanonenjagdpanzer for free: