Work will begin soon on the next (Fortran20xx?) standard. Suggestions for new features may be submitted.
Brian Meek's article gives some history of the development of the Fortran 90 standard.
The home page for the Fortran development committee J3 is http://www.j3-fortran.org.
NCITS has a page for J3 (formerly X3J3) the Fortran standards development body.
The international standards organization responsible for the standardization of Fortran is WG5. They have a home page.
Information about the IFIP Working Group 2.5 (Numerical Software) may be found here.
Information about the High Performance Fortran Forum may by found here.
Information about the Japanese Association for High Performance Fortran (JAHPF) may by found here.
Here is a pointer to some work in progress on interoperability between Fortran and C.