AMD APU driver updates for Linux may have revealed details about the company's upcoming Van Gogh architecture. Additionally, the updates seemingly confirm the Infinity Cache of Navi 23-based desktop GPUs, including the RX 6600 series.
https://www.notebookcheck.net/AMD-Radeon-RX-6500-or-RX-6600-GPUs-to-feature-32-MB-Infinity-Cache-no-bandwidth-amplifier-capabilities-for-the-Van-Gogh-architecture.530315.0.html