In today's Zendikar Rising Preview Stream, Sean "Day[9]" Plott was playing MTG Arena on mobile!

Although specifics have not been announced, we must be getting close if Wizards is talking about it. We got a small glimpse of the mobile UI earlier this year during Toy Fair 2020 and now we've got some new in-game footage!

No date is currently available for the launch of MTGA on mobile.