Hi there,
I just discovered Winter CMS few weeks ago, seems to be a forked version of October CMS with some tweaks. I tested deeper a local version and it’s running great.
As OctoberCMS is already supported, it might be an easy implementation ?
Yeah it was a nasty fork / split that took place too.
Personally I’m inclined to stick with OctoberCMS. The new release is really neat. Only there is no longer a UI installer. Which I hope they bring back 
I suck at command lines.
The small licence fee is worth supporting the project moving forward too.