No, you don't get a C208 rating as it is covered under the SEA (<5,700kg) class rating. It is not even mentioned in the section XII Flight review and Proficiency Check tables - all you get is an endorsement by the FE that you have done an SEA flight review. The fact that it is done in a C208 is recorded in your logbook and that is what you would use to prove you have done the flight review under CASR 61.747
But check that you have got GTE (+ PXS if you fly a pressurized turbine) under Design Feature Endorsements to make sure you are legal.
That is what FCL/CLARC told me.