Microsoft has officially pulled the plug on Windows 10 Mobile for the consumer market. This includes first and third party phones targeting consumers (e.g. you can't even buy a Lumia phone in their own stores), and first party apps targeting consumers (e.g. Minecraft just pulled support). 3rd parties are free to continue to write apps, but obviously will follow Microsoft's lead here. You can buy a cheap Android or iPhone just for using with Mavic. It doesn't need cellular service.