For the past few weeks now, we've been hearing that the T-Mobile 10.1 update was approved for the BlackBerry Z10 and could start rolling out at any minute. We waited and we waited and now finally, after a few false alarms, it's looking as though it has begun its roll out. Appearing as software version 10.1.0.2006, the update is coming in at around 347MB over the air. Keep in mind, if you're running a leaked OS that is higher than this version, the update will not show as available for you.
If you want the official OS, you will need to revert back to 10.0 and update from there. Oddly enough, the update doesn't appear to be showing in BlackBerry Link as of yet so OTA is the only way to go for now. Have you pulled down the update yet? If so, let us know in the comments or head on into the CrackBerry Forums and share with everyone how well it's running. If you're looking for the full change log, it can be found on the T-Mobile site.