This is a maintenance release. The following items were fixed and/or added:

GUI: fixed keyboard with XQuartz X server (bug #10664)
Main/Display: fixed a crash with multi-monitors under certain conditions (Mac OS X hosts only)
Main/Properties: fixed a crash under certain conditions, for example after wakeup from host hibernate (bug #11444)
Settings: don't lose the internal network settings if they are not currently active
Storage: another incompatibility fix for VHD differencing images with Hyper-V (bug #5990)
VBoxManage: don't read beyond the end of the file specified with export --eulafile (bug #11528)
Linux hosts / guests: Linux 3.9-rc0 compile fixes (bug #11529)
Linux Additions: fixed two warnings in the shared folders guest kernel module (bug #11390)
Linux Additions: don't crash VBoxService if libdbus is not available (bug #8638)
Windows Additions: fixed upgrading MultiMedia Redirection (MMR) support