Highway Star
Space Truckin'
Pictures Of Home
Smoke On The Water
Maybe I'm A Leo
Lazy
Never Before
Black Night +
The Bird Has Flown *
Speed King *
Child In Time *
Black Night *
Jon Stew #
Hey Joe #
Emmaretta #
Kneel And Pary #
Not Responsible ++

The first seven tracks are said to be Machine Head outtakes - probably the same stuff that has been released a few times before.
Black Night (+) is said to be a different version that the 7" one.
The next few songs (*) come from the Tommy Vance BBC Session 1970. The rest (#) is BBC stuff plus the album version of Not Responsible (++).
No further info at the moment.