Improved security of the product - e.g security of our processes (guarded by the self defense component), we handle the conditions for the Guest account better, we are very senstitive for any incorrect inputs from the user (with a negative impact on the system's security), we tuned the import settings functionality not to allow bypassing any protections
Added "resume" support in the setup component, so some of our users should notice smoother downloading - depends on a "quality" of their connection (mainly during the program update where the amount of data is quite big)
Included a new antispam library (IS/Premier editions) for better accuracy of our anti-spam module
Included warnings during the installation process, in case there could be some obvious problems resulting in not 100% functionality after the installation (missing admin rights, insufficient space on disk, etc.)
Added ability to disable promotion pop-ups (in PRO/IS/Premier editions). We strongly believe that our additional products can be valuable for our users, but we also respect, that they wish not to be bothered by such offers.
Performed a static analysis of our code resulting in many fixes
General bugfixing - this covers a lot of stability & performance changes in all components (but the main focus was traditionally on the network & engine components)