14 DAY TRIAL // Clonezilla Live is a Linux distribution based on DRBL, Partclone, and udpcast that lets users back up their systems and perform other kinds of maintenance work for the OS. New updates are released all the time, and the main packages are always getting upgraded to newer versions.
When you have a Linux distribution that must run on basically any kind of hardware, then you must also have the latest package implemented. Clonezilla is doing exactly this, and it's one of the distros that are first to upgrade their Linux kernel or the Debian base. On the other hand, not all of the updates made to Clonezilla are interesting, and some of them are actually quite boring. The same can be said about the current iteration.
"The underlying GNU/Linux operating system was upgraded. This release is based on the Debian Sid repository (as of 2015/May/19). Package drbl was updated to 2.15.9-drbl1, and clonezill was updated to 3.16.3-drbl1," reads the official changelog.
A complete list of changes, improvements, and fixes can be found in the official announcement, and that includes a long list of modifications made in previous releases. You can download Clonezilla Live 2.4.2-4 right now from Softpedia, and you can run it as a Live CD with no problems, but this is not the stable version, and some bugs might still be present.