According to this reddit thread which references a Twitter feed, it does work with magic trackpad: https://www.reddit.com/r/apple/comments/bwfk09/mouse_support_

According to this reddit thread which references a Twitter feed, it does work with magic trackpad: https://www.reddit.com/r/apple/comments/bwfk09/mouse_support_on_ipad/ https://www.reddit.com/r/apple/comments/bwfk09/mouse_support... I haven't tried it so I don't know.