Not exactly. I'm assuming you're referring to the quotes from this interview/article:Halo 6 will be coming to PC as well.
http://www.pcgamer.com/halo-6-will-release-on-windows-10/
To me, that's NOT confirmation that yes, Halo 6 will be on PC. It certainly alludes to it by saying Microsoft first party games will be on PC, but until I see something from Microsoft that says that "Yes, Halo 6 will release on PC" I'm not assuming anything. Don't get me wrong, I'd love to see Halo 6 on PC, but I'm of the mindset of "I'll believe it when I see it." And let's not forget that Phil has been known to have his mouth write checks that his staff can't cash. Lord knows the Xbox One Backwards Compatibility, while a cool feature, isn't nearly as robust and full of games that Phil originally sold it would be.
I know I'm nit-picking here, but honestly, Halo is in a class of its own. I know 2 previous games were on PC but those were basically simple ports that were commissioned. Halo 6 on PC would be a major undertaking, both programmatically and marketing-wise. Yes it opens up the franchise for more gamers but also does hurt the marketability of the One if people realize they don't need the One to play the newest Halo game. It's a very tight rope to walk, and from a business perspective it really could go either way.