UPDATE @roblaguna let me know that @theiexplorers updated their OTA download links. I’ve included them below. *

@theiexplorers and @bbhybrids were able to extract the files needed for OTA and desktop installations of the official BlackBerry Twitter app and have made a few download links available!

Keep in mind that these are leaked versions of the official app so they still might not work properly on every BlackBerry. Install at your own risk and make sure you back up your data first.

According to @theiexplorers, you can use BBSAK to install the Twitter app through your desktop computer but it might not work on BlackBerry devices running an OS lower than 5.0. I tried installing the app with one of the OTA links and it worked, I see it under the applications menu, but I don’t see a shortcut and when I try to force it on with QuickLaunch it gives me a java error. Maybe one of you will have better luck.

• Download Twitter for BlackBerry v1.0.0.28:
  • OTA for OS 5.0
  • OTA for OS 4.7.1
  • OTA for OS 4.6
  • OTA for OS 4.5
  • Desktop Mirror 1
• How To:
  • Backup And Restore Your BlackBerry
  • Install applications and themes via OTA with or without using data

If you get this to work or find any more download links let me know in the comments!