LibRaw 0.5.4 released. Changes are:

• Imported support for six new cameras from latest dcraw 8.87.
  Cameras are: Canon 1000D, A720, SD300;
  Nikon D700, Olympus E-520,Kodak C603.
• Mmaped I/O changed back to buffered FILE I/O. Mmap() uses more memory without significant performance advantages.
• Licensing changed to 'GNU GPL v2 or later' (from 'GNU GPL v3 or later').

Your can always download latest LibRaw version from this site's download page.