Here's the third party mainboard that's available today. Nice thing is they don't have to design a whole laptop to experiment with a new architecture, cause they can just build off Frame.Work's... framework.
https://deepcomputing.io/product/dc-roma-risc-v-mainboard-iii/

This crowdfunded solution has new expansion cards (like a double type-c) and also a laptop dock that uses expansion cards so you can customize your own dock.
https://dockframe.com/

A little over a year ago, Prusa partnered with them to make a framework 3d printing contest. The winner was an open source project to use a frame.work mainboard to build a SteamDeck clone.
https://www.printables.com/contest/449-framework-computer-mainboard-case