In a move that is at once shocking and could have significant ramifications for years to come, Disney announced today that it will be releasing its live-action epic Mulan simultaneously in select theaters and on Disney+ on September 4th. The film will not be automatically available on Disney+ at that time, and will instead be offered as part of Disney+'s new "Premium Tier" that will cost an extra $29.99 as a one-time fee, on top of whatever you pay for your subscription. The PVOD release on Disney+ will only take part in the United States and …