As of now, in addition to TRON and Speedway, this project includes a minor overhaul of Tommorowland Power and Light (SM Gift Shop), an exit shop, but no arcade IIRC. The exit shop will be an actual shop (not a cart or corner), but probably about the size of Buzz's Shop or Merchant of Venus.
Interestingly the Tron reboot opened in an arcade iirc. Makes you wonder how long it has been thought about for Tomorrowland. Still good they are planning to remove the arcade for a shop or queue.
As always, thanks for the contributions you make here.