How interesting. I will be very curious to see whether you rekindle your love for black in the Fall or whether it's a permanent preference shift. It wouldn't surprise me at all if that was the case.
I've always worn black more as a color than a neutral - it has never been a core neutral in my wardrobe. Even now, I have a few black things but rarely reach for them, unless it's to crisp up some white, which I wear almost constantly, year round. Black no longer flatters me and has never really called to me. Navy, grey, and white are my core neutrals and, like Caro, I'd love to eliminate black completely, I love to wear color and find that black drags colors down, especially light colors and pastels. White, on the other hand, brightens and freshens everything. I am fortunate to wear optic white well and I take full advantage of that. I haven't bought anything black - even shoes - in a very long time and don't see that changing.