In my case, i have somes big issues with this release, perhaps a compatibility issue with my board (the Dropix board by Drotek, based on PX4)?
-The firt WP is joined correctly but after, the arduboat waving a lot and seem follow another parralel line.
-If i change the PID setting and so, there are no change on the arduboat behavior.
-When the arduboat joined the last WP (not in the same location that the google map..), he goes into loiter turning mode automatically!
I downgrade in 2.50 and now it's working perfectly.