I don't think the US gov't is taking kindly to Nvidia desperately trying to stay in the Chinese market.
When they tried to reroute all shipments ahead of the deadline the US moved it to be effective immediately.
All it takes is one small change on the sanctions and their new chips go kaput.
These sanctions will negatively impact the next generation GPUs from all vendors, as they will be designed for China first.
In all likelihood if it's not happening now it will never happen.