The notes for Patch 4 contain the statement: "Added Cross Play through direct connect with Mac version"

To me "cross play" means players on multiple platforms can play the same game together, so what does this statement mean? Can my friend on Windows direct connect to my Mac and we can play together? Even if the build numbers are different?: 4.1.85.5707 (PC), 4.1.85.6028 (Mac) 

Thanks.