In the past, this was used for code release announcements and other information of import
to the Tcl/Tk community. One would submit an announcement by emailing it to
tcl-announce@mitchell.org. Unfortunately, this process has been broken for some time, and many people have failed in trying to revive it.
The general newsgroup for Tcl/Tk Q&A. If you have a problem that isn't
solved in the FAQs, post here. It's also the appropriate newsgroup for
general design debate about Tcl/Tk. The Tcl core team keeps a watch on
this newsgroup.
If you want to search, browse, or post message to the newsgroups, use the
excellent Google
Groups interface.