Visiting the release page of Kirby 4 (right now in Alpha 5 – version 4 is planned for October roughly) makes me excited to upgrade and use some of the new features and improvements.
They write about the upgrades:
Kirby 4 will be built upon the healthy code base we established for Kirby 3. Upgrades will be comparable to a 3.x release. While we stay on the same architecture, this new version will bring many long-awaited features and is going to move your projects forward.
The new version will bring a new design with improvements for editors and developers, a new link field that can be used to create links to external URLs, internal pages, files, email addresses and telephone numbers and much much more.