A new feature that RIM has introduced today is BlackBerry operating system upgrades via BlackBerry.com/upgrades. You will be able to update your OS with the latest version provided by your carrier. So for any carriers that currently support OS 4.5 you will be able to get the latest version. This new software detects available updates by your device PIN (check whats available here).

Check out the latest OS upgrades at BlackBerry.com/upgrades >>

New details have arrived on AT&T launching OS 4.5 software for all exisitng BlackBerry smartphones. The new OS has been found online many times and now it will officially get launched for AT&T come later this month. Users should be able to download updated OS verisons for their BlackBerry Curve 8300, 8310, Pearl 8120 and 8820 smartphones at att.com/bbdownloads.

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I've been testing a beta version of RIM's upcoming OS 4.5 for my BlackBerry Pearl 8130. While no exact time frame is known for this new OS upgrade it is expected to come VERY soon. First off you won't notice any crazy new additions to the UI or anything. Continue reading to see the changes and pictures… Read the full story

BBcool's tipster is spreading tons of new info. They just got their hands on RIM's OS roadmap showing OS 4.5 and 4.6. It seems that OS 4.5 will be available for all models 8700 and up (excluding the 8707) and will be coming sometime very soon. Next up is OS 4.6 which so far has only been designed for the BlackBerry Bold (which is set for release this summer.. July).