Not sure this is right. DOCSIS4.0 (which I think is what you are referring to?) doesn't require TV channels to be moved off plus it can coexist with existing DOCSIS3.0/3.1 (I think the plan is to actually bond 3.0, 3.1 and 4.0 channels together - much like how most 3.1 rollouts actually are majority 3.0 channels for BC purposes).
DOCSIS4.0 does use higher frequencies though and this requires a lot of additional work to upgrade the infra to support this.
I think what Comcast is calling '10G' is the fact you can now order a totally new FTTH run which doesn't use coax instead.
Tbh it's a confused strategy. If you're going to offer XGS-PON to everyone, why bother with DOCSIS4.0? It doesn't really make sense to run fibre runs just to one customer, you could probably do a whole street in not much more time.
DOCSIS4.0 does use higher frequencies though and this requires a lot of additional work to upgrade the infra to support this.
I think what Comcast is calling '10G' is the fact you can now order a totally new FTTH run which doesn't use coax instead.
Tbh it's a confused strategy. If you're going to offer XGS-PON to everyone, why bother with DOCSIS4.0? It doesn't really make sense to run fibre runs just to one customer, you could probably do a whole street in not much more time.