Tcl/Tk 9.0 Release Announcement - https://www.tcl-lang.org/software/tcltk/9.0.html
The first major release in 27 years. 64-bit internal structures, so data can be huge. Full unicode with all the funky new emojis. Zip filesystems, etc., etc.

There’s lots of new stuff, and some old cruft has been dumped, so some programs may need a few updates, but there’s still a high level of compatibility. The page above links to release notes with details of what’s in and what’s out.
#tcltk #tcl #programming