@Dominaezzz Basically, it enables new HMPP. It should also enable granular/intermediate source sets support in the IDE and also in Gradle for common APIs (e.g.
CLLocationManager
in multiple Apple's OSes, or posix on all UNIX based native targets). It's not finished, hence why it's under a flag.
kotlinx.coroutines native multi-thread branch and releases take advantage of it.
Improvements can be expected in 1.3.70, I'm eager to try EAPs