While the US market only got a model with 4 GB RAM and 64 GB internal storage, it looks like China is on its way to a Moto Z2 Force with 6 GB RAM and 128 GB internal storage, but with a slightly lower battery capacity.
https://www.notebookcheck.net/Moto-Z2-Force-with-6-GB-RAM-hits-TENAA.241026.0.html