Apple's been expected to introduce ever since it last December. But it's a no-go for iPhone OS 4, at least for now. Maybe we'll see the feature if Apple holds another in the fall.

No E-mail Attachments

One of my biggest pet peeves with the iPhone is that you can't attach files within the Mail app. And while some apps allow you to send files to an e-mail, there's no way to include multiple attachments. The Mail app will get some nice upgrades in OS 4, such as threaded view and unified inbox, but attachments wasn't among them.

No File Management

I understand Apple's desire to keep things simple on the iPhone and iPad, but there comes a point where not having a central system for managing photos, videos and documents only makes things more complicated. The lack of a file manager may even by a roadblock to the aforementioned e-mail attachments, which is even more frustrating.