One of the problems with BlackBerrys is that without the expense of a BlackBerry Enterprise Server, you can't do wireless syncing of contacts.
This rumor at the ZDNet AppleCore suggests that Apple may be solving that problem, even for Windows users!
- Full over-the-air syncing including calendars, contacts, and email (similar to Exchange)
- .Mac syncing on Windows
Let's hope. End of June will see iPhone 2.0