What to Expect from BB OS 4.5?

The long awaited BlackBerry OS 4.3.1 was re-branded by RIM's marketing to BlackBerry OS 4.5. Whatever they decide to call it, this version will bring a lot of new functionality to the existing BlackBerry devices. Different models will get different new features and PC Magazine gives you the breakdown of what to expect according to your model. A couple of the most anticipated built-in features, which you can get today as 3rd party application you purchase, are spell check and HTML e-mails.