FrontPage Extension development stopped with the 2002 version of the
extensions. They are being phased out, but not necessarily as a means of
uploading a site. Since Vista doesn't have a server counterpart yet (at
least not for a year or two) we'll still have Win 200x available as a
platform, and Win 2003 and 2000 servers do support the extensions. Basically
though, FP has been decoupled greatly from the extensions over recent
versions though still used the metadata for publishing. EWD no longer needs
metadata folders so it's removed the last vestiges of the extensions form
it's makeup for publishing. I believe EWD will have deprecated most of the
bot functionality that madeup the extensions so the need for them is
definitely being phased out. Webdav is also another http alternative to
publishing that has caught on and is similar to the extensions so perhaps
some people will switch to that. I believe though that we'll see most users
going back to good old FTP since they don't need to worry about breaking the
server extensions anymore.