I've released the updated 'Zeolite' plugin API that should be used with the forthcoming L3DT release 2.9. This is a minor update that includes one new variable type (VarID_dirsel, for selecting directories), a couple of new functions, and a few new helper routines for accessing various application, script and and file/directory/path functions. You can read the full changelog and download the API from here:
http://www.bundysoft.com/docs/doku.php? ... anges#v2.9
Please also note that the function reference pages for the core Zeolite API are now complete and up to date.