Just released a new Apple Watch app. The difference with existing Tesla watch apps is that it doesn't try to shrink the official Tesla App, but extends it by taking advantage of the Watch format:
Complication support - monitor your charge state as easily as checking the time
Use the crown to set charge limit more easily than even on your phone
More WatchOS 2.0 support - Uses selectors/dials (vs clunky buttons of watchOS 1.0 apps) to adjust car settings.
Quickly check and change common items like lock/unlock, charge, climate, and panoramic roof states.
A relative bargain at $3.99