When will AMEX be supported by Garmin Pay

Garmin Pay is the bomb dot com, or so I thought. I recently switched credit cards to an American Express but am dismayed to see it is not supported. Is this on the roadmap, does anyone know? It'd be a real shame to need to switch to an apple watch over this, since apple pay works for pretty much anything.

Please bring AMEX support! Let's keep Garmin Pay great!