This is the maintenance release of Wireshark 2.4. The repository will automatically update to version 2.4.3. If you want to use it, add the repository following the instructions in Wireshark 2.4 on CentOS7 (TL;DR version)
yum update to get the latest repository information.
Since version 2.4.x uses only the Qt version of the interface, if you’re coming from a 2.2 version, remove your wireshark-gtk package with
yum remove wireshark-gtk.
Add the Qt version using
yum install wireshark-qt. Now
yum update to the latest version (which will be 2.4.2).