@mike
You can get to the pro tour by
Winning a Regional Championship Qualifier at a local game store (or being runner-up in a two-slot RCQ)
then doing well at the Regional Championship (the number of PT invites varies from region to region)
I’m sure there’s a path to the PT on MTGO and maybe even MTGA too.
@mike
The announcement for the yearly (plus post-PT) B&R updates only mentioned paper formats but it seems like as good a time as any to update the arena-only formats too.