Garmin Express does not show updates anymore:

Since the roll out of v7.24.0.0 there is no longer an indicator of an update to any of the Garmin units you have in the Garmin Express window.

So now you have to click on each item you have to see if there is an update or not.

Example: my Etrex 22x has a map update but you would never know it if you did not click on that item in Garmin Express.

Why they removed that from Garmin Express we will never know......