This is our usual maintenance release, focused on fixing and enhancing minor details on the editor. There are also some important improvements on browser compatibility, specially with Safari, Chrome and Opera.
This is a safe and recommended upgrade release for 3.4 installations.
Check out the What's New? page for the full list of changes.
CKEditor is available in Open Source and Commercial licenses. Full details can be found at our license page.
Please use the CKEditor development web site to report issues and suggestions through tickets.