In the FAA world the new ATP regulations apply only for the Multi Engine Airplane ATP. The required training in a Level C or D simulator of an aircraft of over 40,000 lbs GTOW applies only for the written. You are not required take the ATP Practical Test in a type rated required airplane. The regulation in question is 14CFR61.156.
As for your C208 training. Pan Am is a Part 142 approved school. All their courses are FAA approved. The level of your pilot certificate does NOT have any affect on the course. It is stilled FAA approved. Since Pan Am has EASA approvals, it could be an EASA issue. I am not sure as I don't deal with the EASA world a lot.
Be careful with this ATP/TR rating issue. There are a couple of schools in the Miami area that have an ATP program that have you do the ATP training in a type rated required airplane simulator like a B737. However, you do not get the type rating, just the ATP. If you want the type rating, you do for the most part the same training you did for the ATP in the same sim.