The Beta version 4.13 was released at the beginning of November. It has very many major changes, see
http://www.limewire.com/english/cont..._history.shtml and testing and bug finding is progressing well.
When the version is ready for release as the official version it will be released. Meanwhile you are welcome to test the beta and make your findings known at:
http://www.limewire.org/forum/forumdisplay.php?f=75
You can download the Beta version , pro if you are using pro now, or Basic from
www.limewire.com