I switched to this ticket in Berlin and the process was (surprisingly) straight forward, could do it in online so I wrote about it. They did try to make the digital ticket default instead of a physical card.
You can already apply for your monthly subscription to change to this ticket. That's what I did. So instead of 66 euros for Berlin (VBB area) a month from May, I'll be paying 49 and can access the local networks across the country
https://www.arbeitnow.com/blog/bvg-monthly-ticket-to-deutsch...
You can already apply for your monthly subscription to change to this ticket. That's what I did. So instead of 66 euros for Berlin (VBB area) a month from May, I'll be paying 49 and can access the local networks across the country