A placeholder ticket for upgrading to Kotlin 1.4 in our Spring Framework 5.3 timeframe.

Comment From: sdeleuze

Kotlin 1.4 M1 has just been released.

Comment From: sdeleuze

Kotlin 1.4 M2 has just been released, I am doing tests with it before pushing this upgrade.

It is interesting to notice the addition of explicit API mode. We could maybe leverage it.

Comment From: sdeleuze

I am currently blocked by a Kotlin compiler dependency to Coroutines (via the scripting support) which seems to be a kind of circular dependency that causes issue in Gradle dependency resolution in BOM handling. I am waiting a feedback from Kotlin team.