LO4 Beta 1 is out and ready for your testing.
Grab it from here :
I have already installed it on my LMDE64 machine, and it is noticeably faster! Very snappy response times which is highly welcomed. I did come across one minor bug which is reported here: https://bugs.freedesktop.org/show_bug.cgi?id=58159. Please go and find your own bugs ;-)