We are pleased to announce the release of Lift 4.0.0-M4. This release is the first for which tests cross-compile and pass in Scala 2.13 and Scala 3. This release also includes an updated version of json4s that includes a number of bug fixes designed to improve parity between lift-json behaviors and json4s behaviors.

What's Changed

• doc: update support doc for 2025 by @farmdawgnation in https://github.com/lift/framework/pull/2035
• Improvements I think we should include in Lift-4.0 by @andreak in https://github.com/lift/framework/pull/2044
• Lift 4.0 by @farmdawgnation in https://github.com/lift/framework/pull/2043
• feat: Scala 3 test cross-compilation for lift-common/actor/util/testkit by @farmdawgnation in https://github.com/lift/framework/pull/2045
• Updated sbt and dependencies. by @andreak in https://github.com/lift/framework/pull/2046
• Updated json4s to latest version which contain relevant fixes. by @andreak in https://github.com/lift/framework/pull/2048

Full Changelog: https://github.com/lift/framework/compare/4.0.0-M3-release...4.0.0-M4-release