Is kapt part of compilation to K/N?

No, no annotation processor used in Kotlin/Native

Is annotation processing planned for K/N?

I am also curious about annotation processing. It doesn't necessarily need to be annotation processing, but we do need a way to generate code for kotlin / kotlin-native / kotlin-js. Are there any plans for this at all?

guess this better be discussed on less specific channel, such as #general

A thread about annotation proccessing appeared here, in K/N chat, several days ago.

I created a feature request for this: https://youtrack.jetbrains.com/issue/KT-17451

Yeah I asked the same thing several days ago: https://kotlinlang.slack.com/archives/C3SGXARS6/p1491825843307665