https://wccftech.com/amd-big-navi-21-gpu-successors-spotted-navi-31-rdna-3-navi-41-rdna-4-next-gen-radeon-rx-graphics-cards/

We have yet to see some conclusive information on AMD's Big Navi (RDNA 2) GPU for upcoming Radeon RX enthusiast graphics cards, however, well-known leaker, Komachi, has reported that AMD has already started initial development of its next-gen, enthusiast-class GPUs, the RDNA 3 based Navi 31 and the RDNA 4 based Navi 41.

AMD has stated that its Big Navi (RDNA 2) GPU codenamed Navi 21 is going to bring the same level of disruption in the 4K gaming segment as its Zen architecture brought to the CPU segment. AMD's plans are to unveil the Big Navi GPU before any other RDNA 2 product, this includes both next-gen consoles from Sony and Microsoft. The Big Navi GPU will be the flagship carrier of the RDNA 2 line and will set the bar for all next-generation GPUs.