I agree with @777. As Scala 3 is getting mature and there are more real use cases with Scala 3 on Spark now, support for Scala 2.13 will be valuable to users including us.

I think the recent upgrade of Databricks runtime from JDK 8 to 17 was one of a prerequisites to adopt Scala 2.13 and it's a good news, because many important Scala libraries dropped JDK 8 support in these days.