OTA link for Google Talk is below. You can upgrade or try it out for the first time. All the info below.
Google Talk™ for BlackBerry® smartphones allows you to chat in virtual real-time with your instant messaging (IM) contacts when and where you want to – not just when you’re in front of your computer.
* Fast and reliable messaging
* Your Friends’ presence updates (e.g. ‘Available’ or ‘Offline’), in virtual real-time
* The ability to customize your own status messages (e.g. ‘Back in 5 mins’, ‘On the Phone’)
* Emoticons to express yourself
* The ability to invite multiple users into one conversation
* New! The ability to personalize Google Talk with a buddy picture—use an image of yourself or display your favorite icons.
You can also:
* Communicate with other Google Talk users even while using other applications on your BlackBerry device
* Set up custom notifications for new Google Talk messages.
You can pick up Google Talk OTA by going HERE!