So Emily tells us in this forum thread:
We will be releasing a new version of Out from Boneville in a week or so, that includes all the improvements made to the engine in the past year.This presumably means that we'll get resolution options and shadows, and probably lots of more subtle improvements. The question is, are these updated versions of Bone related to It?
Watch for a big redesign on our website - once that is up, new versions of our Bone games and Texas Hold'em will be available for download as well.
Also as a nitpicky detail, these versions of Bone still don't have character shadows - it would have taken a ton of work to prevent the shadows from clipping into the ground all over the place... It's a fix that should eventually be going into the series though. These forthcoming updates were quick revisions to get all of Telltale's old games up to date with the latest version of the tool more than they were cosmetic or feature fixes.