What is the proper windows support version for mid-2015 15-inch macbook pro?

Hi, I have a 15-inch 2015 macbook pro and I can't find any custom windows support download link for this. My bootcamp doesn't compete the download process.

My bootcamp version is 5.1.4 and I have downloaded the windows support software with this version but still my windows finds it incompatible. I heard the boot camp 6 is released? Where is that????? I NEED HELP. DRIVERS FOR MY 15 INCH 2015 MACBOOK