I just installed the new stadium app (search for SPVRS in the App Store) and it's pretty cool, if a little gimmicky! Just avoid all the commercial stuff where it tries to sell you package deals and so on (unless that's what you want, obviously)
It's a little clunky in that you either need a 2nd device or a printer in order to make it work - its "augmented reality", so you need an image to point your camera at. The app takes you to this link:
New-stadium.tottenhamhotspur.com/seeing-is-believing And you have to either click the button to print the image or scroll to the bottom so that the image of the stadium fills up your screen. Then you simply take the device you're running the app on and point it at the picture of the stadium
You should see the same picture of the stadium on your device, except it says "360*" in the middle. If you tap that 360* you are transported into the centre-circle of the pitch in the new stadium and you can look through your device in any direction, just as you would if you were taking a photograph.
It's pretty sweet!