The following information was provided by the package's contributor.
Name of contribution: Interfaces
Author's name: Florent CHERVET
Location on CTAN: macros/latex/contrib/FC/interfaces
Summary description: key-value interface for commands and environments in LaTeX
License type: lppl
Announcement text given by the package's contributor:
v2.4 - Release Candidate ;-)
interfaces-fancyhdr: complete set of keys
foot/inner head/outer/offset etc.
interfaces-hypbmsec: has been completely rewritten
and is now totally independant from titlesec
lastsectionanchor, lastchapteranchor etc. can be
used when hyperref is loaded (usefull to make
hyperlinks in header/footer depending on marks)
interfaces-marks: has been revisited (optimisation)
thanks for the upload; i've installed the new version and updated the
catalogue repository.
Users may view the package catalogue entry at
http://www.tex.ac.uk/tex-archive/help/Catalogue/entries/interfaces.html
or they may browse the package directory at
http://www.tex.ac.uk/tex-archive/macros/latex/contrib/interfaces/
The catalogue entry will change (somewhat) overnight tonight.