Discussion takes place on the mailing list, formencode-discuss@lists.sf.net:
Updates to the repository are emailed to the (inaccurately named) mailing list formencode-cvs@lists.sf.net:
The repository can be checked out with:
svn co http://svn.colorstudy.com/FormEncode/trunk FormEncode
Note: the SourceForge CVS repository is out of date and no longer used.
Bugs can be reported in the SourceForge bug tracker.