This epic thread on the KiCad forum tracks new features that are in the upcoming V6 release:

Post-v5 new features and development news

I thought many would be interested in the development status and new features of pre-v6/post-v5 now when 5.1.0 has been released and version 6 development has begun. Add your favorite here if someone else hasn’t done it already.

The most recent post describes curved tracks: