Today I received my new Garmin 5 plus from Garmin service (warranty), I connect the watch with my Garmin Express software in MacOS and download 8.40 FW but the installad maps are 2017 version. The program says thai are the newest? Is it possible?
Unless you care about a specific roundabout in your neighbourhood then it is highly unlikely that 2019 would be substantially different than the 2017 maps. Having said that, mine says 2019!