Videocardz seems to have gathered all the specs
videocardz.com
The card they showed at the cpu launch event was supposedly the 6800xt. Will be interesting to see where performance and pricing actually lands.
the 6900xt will apparently be available through AMD only

AMD Radeon RX 6900XT to feature Navi 21 XTX GPU with 80 CUs - VideoCardz.com
AMD Radeon RX 6000 series, what we know so far AMD Radeon RX 6000 series specifications have been known to us since Monday. This week AMD provided a lot of details to AIBs, including new (working) drivers, final SKU names, and so on. We have been able to cross-check parts of the specs and we […]

The card they showed at the cpu launch event was supposedly the 6800xt. Will be interesting to see where performance and pricing actually lands.
the 6900xt will apparently be available through AMD only