What no one seems to be mentioning yet is the connection between the two. You see, mac desktop widgets basically run in Safari. If Safari runs on windows now, it’s a small step to offer widgets. If Apple makes that step then the same rich mini-applications can run on Windows, the Mac, and the iPhone. Apple will be distributing Safari as part of a bundle with iTunes, which suggests that they have big plans for Safari.
Of course, I have no idea what it really means, but it suggests that Apple is providing weight to creating rich internet apps based on existing widely adopted open standards, This is in contrast to Adobe with whatever they are calling Apollo now, which seeks to leverage their Flash product, and Microsoft with Silverlight, which while open in some ways, involves a lot of Microsoft-isms.
Another Update: I misunderstood the initial announcement. The iPhone will have safari, but it won’t support widgets. Disappointing and lame. I hope it’s not a permanent condition.