We've already seen the BlackBerry Bold 9900/9930 get updated to OS 7.1 on Sprint and Verizon, and now it looks like we can add another carrier to that list. According to the folks at CrackBerry, an update for the Bold 9900 on T-Mobile is now available to download. The new software will bump users up to OS 18.104.22.168.
If you've got a T-Mobile Bold 9900 and want to check for this update yourself, grab your 'Berry and head into Options > Device > Software Updates and see if the new software is waiting for you. Some users are receiving error messages when trying to check for the update, so if you try to grab yourself some 22.214.171.124 action and it keeps failing, you may want to wait and try again after the new update rush quiets down a bit. Once you get the new software up and running, remember to make a stop in our comments section below to let us know what you think of it so far!