I dont doubt at all, that a marketing person at garmin has had a meeting about taking on kestrel, and one of the design engineers was in that meeting, and its a passion-project for him.. really wants to get the green light.
The accountant in that meeting was the real wet blanket. Project cost, time, R&D investment VS ROI, market penetration, scheduled update and associates dev costs (ongoing cost that eat into profits), etc..
I actually expect garmin has a bluprinted path, and a non-physical concept; potentially a very rough physical prototype (POC, proof of concept). Basically a 4 times larger than it needs to be, purely for software dev, (think "bench test mule") and probably some cad / eagle PCB designs for a nice production release.. but thats as far as it will progress for the forseeable future until that bean-counter can be convinced, and the software can be polish to be robust.
It will aslo be ip67 rated to 50m, even with the humidity sensor, usb rechargable / power, and be bluetooth connectable to a base station or smart device (extra unit / upgrade) for remote viewing. Like incar dashboard, or if you mount it like a weather vane to your house roof, or shooting range, so can view at the the line.
Last part is a wish list. Pay attention garmin.