LibRaw 0.17-Alpha2 adds 15 cameras and some fixes:

• Fixed possible buffer overrun in metadata parser
• New cameras:
  • Canon: 5DS, 5DS R, 750D, 760D, M2, M3
  • Fujifilm: XQ2, X-A2
  • Leica: Monochrom (Typ 246)
  • Nikon: D7200, 1 J5
  • Olympus: SH-2, TG-4
  • Pentax: K-S2
  • Samsung: NX500
• Minor fixes to make old gcc happy
• ABI changed, recompile binary packages. Shlib version incremented too

Download it here: http://www.libraw.org/download