Metro / Surface: What's in the name?
There is a lot in the name as it is identity of something. It is the way we know and talk about that something. With Windows 8 Microsoft seems to be on a name breaking spree. Earlier they rebranded Surface as the new Windows 8 Tablet and renaming the earlier MS Surface as PixelSense. Now it is the Metro UI being renamed as Windows 8 UI.
We are used to code names for products and then switching to their final names so this will also settle down. But while in transit, conversations are becoming longer as I have to talk something like this - "We can do so and so on PixelSense, earlier known as MS Surface" OR "MS introduced the new user experience paradigm called Windows 8 UI, earlier known as Metro UI"