I don't' know, but I feel that 3 machines ( pro, Premium and LE) are a waste of time and cost's!
Nothing more than a Ca$h grab....
Much like the earlier days when it was only the one machine of it's type, LOTR,POTC,IM,RBION etc...
Costing would be cheaper, No 3 art works for cabinets, and playfields,plastics, also only 1 code to produce which means we all end up getting more on a playfield at a cheaper cost.