Version 30 is an Rapid Release Cycle (RRC), officially launched for Windows, Mac, Linux, and Android.
Mozilla’s Firefox 30 has minor improvements and certain new features (e.g. faster access to the social, history and bookmark sidebars via the new sidebars button in the desktop version). Various known issues and bugs have also been fixed.
Bug fixes and other changes can be found here: http://www.mozilla.org/en-US/firefox/30.0/releasenotes
You can download FF 30 RRC from here: http://www.mozilla.org/en-US/firefox/all/
Mozilla Firefox 30 RRC has been successfully tested with NetWeaver versions 740,731, 730, 711, 702 on Win 7 64bit, Win 7 32bit, Win 8 64 bit(desktop), Win 8 32 bit(desktop), Mac and Linux.
As usual, for further details and SAP restrictions see: SAP Product Availability Matrix (PAM): http://service.sap.com/pam
Firefox browser note: https://service.sap.com/sap/support/notes/990034