The latest upcoming release from Motorola in the line of cable modem router combos, is the Motorola MG8702. As with most other new releases, the MG8702 is a DOCSIS 3.1 modem. It also features a built-in AC3200 WiFi Router. With that said, it will not feature the newest WiFi 6 (802.11AX) standard. Don't get me wrong, wireless AC is still pretty sufficient, I'm just unsure why they built it that way. It will, however, handle download speeds up to 6 Gbps.
The release date has not yet been set. Rest assured, you'll hear it here first as soon as I know.
So far the MG8702 has been approved by Comcast for xfinity services.