Hello Matthew!
It is included in changeset as far back as early november, but beware since there sometime the MySQL support starts appearing which could break stuff - work in progress you know ; )
I'm currently running a build from changeset 30270 and the core is nice in there but the TinyMCE is full of strange things like images that disappear on save, Macros in the editor throwing "Object not found" errors etc...
So to save yourself some head ache (and VERY late nights), pick a version as far back as possible if you're think about production usage ; )
// ; ) Kalle
" - Yeah I'd like to share your point of view, as long as it's my view too... (
http://www.d-a-d.dk/lyrics/pointofview)