Fortran 2003 is a significant revision of the Fortran 95 standard. Some of the major new features are
See Fortran 2003 status.
See the article on support for Fortran language standards.
Although the official Fortran 2003 standard must be purchased from the ISO, the Draft International Standard produced by the committee is freely available. This document is ISO/IEC JTC1/SC22/WG5 N1601 (gzip compressed PDF) dated May 3, 2004 (the equivalent J3 document is 04-007).