A new leak says that AMD could launch upgraded versions of the Radeon RX 6900 XT, RX 6800 XT, and the 6700 XT with the RX 6x50 moniker in Q2 2022. It is expected to run faster 18Gbps memory modules and an upgraded GPU.
https://www.notebookcheck.net/Some-AMD-RDNA2-graphics-cards-to-be-refreshed-in-Q2-2022-with-faster-memory-Rumour.593562.0.html