Dell Streak: Smartphone or Slate Tablet?

You've probably seen pictures of the Dell Slate. Is this a smartphone or a slate tablet?

Here are some details:

* Widescreen display optimally designed for mobile web, video and movies
* Integrated social networking widgets and apps, plus tons of apps through the Android Marketplace
* Crystal-clear damage-resistant Gorilla® glass screen
* Google MapsTM with navigation and text-to-voice, turn-by-turn directions with Street View
* Multitasking Google Android OS that gives you the freedom to do what you want

I'm eager to get my hands on one of these devices so that I can judge for myself: smartphone or slate?