This is an important maintenance release, which precedes CKEditor 3.5, to be released in a few weeks.
This version includes fixes for better support on Opera and Internet Explorer 9 browsers, as well as enhancements to the BiDi feature. Several minor enhancements are available as well.
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.