I have not looked to see, or know what bike(s) the FGRT forks are on, but if the 1199S does not have FGRT forks, then YES (!) they would be different IF the 1199R and SL do have them
-- i do believe the R and SL have the FGRT's but i just haven't looked to know for certain
If you have an 1199S, just look at the bottom of your fork tube, way underneath at the very underside of the fork leg, that is typically where ohlins stamps the model...sometimes it can be very small, or hard to read, but it is definitely there
There are a multitude of things that ohlins can do when they release a new model fork, and you would have to research out the differences (ohlins web site is a start) - (springs/valving/clickers/tube wall thickness/caliper brackets) to name a few