One of the problems with the new regs is the need for tests vs need for a flight review. The C208 is in the SE class rating. Under 61.750 you need training and a flight test to have the SE class rating issued for the first aircraft Make/Model within that class.
After that, to add a subsequent make/model to the SE class you then require training on that make/model and a flight review (revision to see if you have taken in the training, is how I like to describe the process) as per 61.747.
When you read these two (out of sequence) sections, you can see one is how to have the class rating granted, the other is for the holder of a rating to exercise the privileges of the rating.