The FUNARCH series of ACM SIGPLAN Workshops on Functional Software Architecture feature written proceedings - linked from the indidivual workshop pages.
The Journal of Functional Programming has its own category Functional Software Architecture. Consider submitting a paper if you have:
done research in the field
can re-examine a familiar functional-programming topic in architectural terms
have worked on a large functional-programming project and can report on the qualities of its architecture
If you have questions, contact the category editor Mike Sperber!