All of the above. Its pretty nice. The keyboard is pretty much the same with the exception of 2 fast keys at the top for alot better userability and has keys for quick launch of the start menu etc.
The stability of it is solid. I tried to mess it up and it with stood alot of punishment. Bad apps and other such and it held its own.
The reliabiility was pretty good, I never notice it dropping a call or flaking out for any reason.
The browser upgrade in the device is nice. As now it has a status bar and you can zoom in on certain parts of a site that you are viewing so you dont have to squent.

So over all its pretty nice. But you can find out for yourself in next two days as its being released Jan. 5th 2006

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WDTS PEON