NAG Fortran 5.3 is the new compiler release and it improves support for Fortran 2003 and Fortran 2008 while its support for Fortran 95 remains in great shape. Besides the language improvements, OpenMP 3.0 is now supported by the compiler for parallel programming.
The latest upstream OpenMP specification meanwhile is version 3.1 from last year. GCC has also long-supported OpenMP for open multi-processing.
Additional details on the NAG Fortran 5.3 compiler update can be found at nag.co.uk.