This release is not essential and does fix some issues, but nothing major. I consider it same as Advantech bug fixes and some goodies release. Below is my list of stand out changes. Full release notes are hereRelease Notes.
Support for 802.1X Authenticator
Configuration File Parameters increased to 1000 lines
This helps when you want to have few User Modules and as some do have a lot of configuration parameters. Now they all fit into the configuration backup file. Nice.
Firmware Update Improvement
The process of firmware update was improved for devices with eMMC memory. One of the benefits is that the firmware update time was reduced significantly. I have noticed this onICR-3232andICR-3232Wunits. It is very fast.