First, if you downloaded an earlier version and didn't create an evaluation or production cert before today (2.17.2017) you must upgrade to the latest before you can get a cert.
The release fixes a number of memory leaks in the wAuth API. It would only affect you if you were using the API for two-factor authentication logins for a large number of users, so only a handful of our customers. We also made significant updates to how certificate validation is handled. If you are using radius, it would not affect you.
We have also added support for Centos/RHEL 7. At the same time, we are dropping support for Centos/RHEL 5 and 32-bit platforms. If you are still running on one of these, please let us know and we'll help you upgrade.
You can get the latest server release here!