Update: It looks like this update does indeed remove the old 140 character limit for Twitter direct messages that was first launched several weeks ago in other official apps.
Original post: The official Twitter app for Windows Phone has received its first update in over a month. However, this once again appears to be a minor revision, with the change log showing that this is for "various bug fixes"
The new version number for the app is 18.104.22.168. Twitter decided not to go into detail on what bugs have been fixed in this new version. However, if you spot anything new or interesting in this updated app, please let us know in the comments.
Thanks to Darrell and Sean for the tips!