The new and improved version of acs-lang, which we've been working on for a few months now isn't going to be in the 4.6 release, but in the up-coming 4.7 release.
But it works pretty well if you do a cvs checkout from HEAD.
When do you think you'll trust acs-lang enough to release it for use on a live server. I would need a dotLRN release like the translation server and will just add a custom package.