Looks to be a good set. I wonder of this means AFV Club will release a German M109A3G version next?

The background image is a Swiss M109 KAWEST so it could be that or German, or British, or Danish, or Greek, or Dutch, or Canadian, or others as users of Diehl tracks on their respective M109s.

Perhaps also for the future kit of M109A7 from Panda Hobby ?

No, the Diehl tracks are not the same as the current T161 tracks used on the M109A7 Paladin PIM and the latest Bradleys. For starters, T161 tracks have the center guide tooth between the track blocks, not in the middle of each block. It is also a open design on the center guide tooth. The track pads on the face have rounded corners as well.

OK thank you for information.

Good for italian version if not expensive as Friulmodel tracks