Looks like it does not allow new channels for 6 GHz Wi-Fi. 802.11be (Wi-Fi 7) already covers full range of FCC's allowed frequency range. IEEE committee may add new channels in 802.11bn (expected to be ratified around 2028, and commercial name will be Wi-Fi 8) but it also looks like a low probably, considering both 802.11ax (Wi-Fi 6/ Wi-Fi 6e) and 802.11be (Wi-Fi 7) mostly focuses on reducing the interference between different networks by reducing the collision, instead of widening the spectrum (BSS coloring, Flexible Channel Utilization etc.)