Quite a few enhancements and bug fixes  have been added since Lift 2.4-M4 for this release.
Lift 2.4-M5 would be the last milestone before 2.4 final release. If your project depends on 2.4, now is the time to test things even more rigorously.
And, as usual, join the Lift community  and enjoy coding with Lift.
Thank you, have fun!
- The Lift Team