In the meantime, VideoCardz already managed to get its hands on a photo of the Gigabyte Z590 AORUS Xtreme. This is an ultra-premium segment motherboard, the current Z490 version still costs around $600 so that gives you some sort of indication about the price range of the upcoming Z590 AORUS Xtreme. It will probably be higher.
Compared with the Z490 model, the Z590 edition gets more power stages, faster WiFi, and the new Realtek ALC4080 audio codec. There are two PCI Express 4.0 x16 slots and one PCI Express 3.0 x16 slot. Similarly, there are two Gen4 M.2 slots and one Gen3 M.2 slot.
The Z590 Aorus Xtreme motherboard features 20+1 digital power stages, which is more than the Z490 series which features 16+1. The motherboard is equipped with advanced networking such as 1x 10Gbe and 1×2.5 Gbe Ethernet ports, Thunderbolt 4, and Wifi 6E (a new standard that operates in a 6 GHz band).