What makes the iPad so compelling to so many people is its accompanying app store and Microsoft has said nothing about the availability of apps for their new tablet. Since the tablet will be running a full blown version of Windows 8, I'm also not sure the huge library of either iPad or Android apps can be readily ported to it and Microsoft has apparently said nothing about supporting an app cloud. They seem more interested in the tablet's ability to perform more business functions not serve as a combination work/entertainment device.
This article also said nothing about the quality of the screen so it leaves me wondering if the resolution is as high as the new iPad 3 and I'm wondering about the sensitivity of the touch interface. My daughter bought me a Nook color for Christmas a couple of years ago and, although I have been able to root the device to a full Android tablet and enjoy hours of entertainment on it, I am less than thrilled with the touch sensitivity of the device. (That aspect may have been improved with the newer version).
So, I don't think Microsoft's Surface will cure me of my iPad envy anytime soon.