No. Any new content debuting as part of this campaign (like the Bluebell Line or the China-Tibet scenarios), as well as new promos (designer trains) and a few of the older ones (yet to be revealed in Stretch Goals) are available as part of the Seasoned Traveller pledge. Beyond that, we will not offer any promos and scenarios separately.
The box size is 295 mm by 295 mm by 150 mm. In essence it is almost exactly the same size as two Ticket to Ride, Talisman, Eldritch Horror, Exodus: Proxima Centauri, or Catan boxes stacked on top of each other.