For those who don’t follow rec.arts.int-fiction, there is a new release of Inform 7. In addition to fixing over a hundred bugs reported in the previous release, it provides dynamic string handling for the first time, and regular-expression matching.
This means that it’s possible to (for instance) run regular expressions on the player’s command to modify it before parsing; that it’s possible to make any “to say” phrase produce upper-, lower-, title-, or sentence-cased output; and that it’s easier to store and read back text files for use by Glulx.
There are other goodies too.