Customer Owned Modem - Faster Upload Speed 100/200 mbps - tracking compatiblity

Is there a way to track which Customer Owned Modems are compatible with 100 and/or 200 mbps upload speeds?  And is it possible to be notified of updates?

From navigating around the forums, Comcast has cleared the way for Customer Owned Modems to be able to go beyond the previous limit of 35 mbps and be able to user higher upload speeds.  Previously, the increased speed used to require a "xFi Complete" package and a Comcast Rented modem.

However, I can't find a list of what's currently supported or a means to be alerted when a new device gains support.  The https://www.xfinity.com/support/devices/ link doesn't show upload speed compatibility, only download.

And it's possible the limiting factor is Comcast/Someone needs to upgrade Firmware to enable the increased speeds, meaning support for existing modems could come at some point.

From trial and error, this is the max upload speeds I could get:

- Hitron CODA: ~120 mbps

- Hitron CODA-56: 40 mbps

- Arris S33: 40 mbps

- Arris SB8200: 40 mbps