In this new timeline, Rose and Kanaya are still a thing, right? Rose still had drinking problems and Kanaya still helped her with all that, right? Then what's the deal with Kanaya and Sollux when John gets there? Is it just her being nice? A different quadrant? Nothing at all? Or 'to be revealed'?

Rose and Kanaya are still together in this timeline judging from the way their interactions are. Kanaya was holding Sollux’s arm because he was blind, they’re just friends.