Stock availability is a challenge, been looking for one since announcement, not seen it in stock once.

This is a very nice and detailed teardown of the popular CalDigit TS4 Thunderbolt 4 dock. (Link found via a post in the Framework community).

Of all the docks I tried the TS3 was the only one to work reliably with m1 mbp in clamshell. I hope the TS4 follows suit.