Title says it all.
https://support.native-instruments.com/hc/en-us/articles/360014900358-Compatibility-of-Native-Instruments-Products-on-macOS
Yep but it's not a new version with some specific Sonoma compatibility code : it's the good old 6.5 version (dated from march 2023 I think).
So they just make official what users know since ages : Reaktor is actually running fine with Sonoma.
I have some issues though with some certain instruments (Rounds for exemple), but I don't know if it's Reaktor, Rounds, Live, my machine or something elseโฆ