The latest CC3+ update is 28 (version 3.98, released June 1st 2022). Download it from your Registration page.
I've been working on this world in Fractal Terrains for a few months, and have probably about 50 or so outputs to show for it. Been playing around with the heights and climate. Anyway, I think I'm mostly settled on the altitudes in the png I've attached. I decided to do temperature and rainfall maps from scratch, using some basic things I've taught myself about climate. It seems like you can only put one attachment at a time in here, so I'll attach the temperature map in another post. Wondering how people feel about my progress.