47
Hooray, a headline that doesn't oversell it!
Some articles were heavily clickbaiting about HL2 ep3, and while there is like one early/experimental weapon model from it in this leak, it's something fans have already known about and seen in some previously leaked testing footage.
As far as I understand it, most of this is just some additional data on things already known, and different builds of things we've already seen. Still awesome, but not "omg HL3 leak!"