It is already stated on multiple places this should be coming to the beginning of the northern hemisphere outdoor season.
That’ll come by spring 2022 (northern hemisphere). Wahoo says that won’t be limited to the Wahoo bike computers, though it might be limited functionality on other units. For example on a Wahoo unit you’ll get 4DP zones, but they said that likely won’t happen on other hardware platforms. Hands-On With Wahoo’s New SYSTM Training Platform | DC Rainmaker
