I wouldn't have thought that would make a difference, as long as the build.prop is correctly identifying your device as a Nexus 6 you should be OK. But definitely worth keeping abreast of updates to custom ROMS if you are running one as they are constantly being updated.
Please use the search feature before posting a problem/bug/idea. What's a Spotify Rock Star, and how do I become one? Using Spotify Since March 10th 2009 Twitter: @mechanimal82