Cut the Rope disappears from the Windows Store
If you've got an update in the Store in Windows 8 but there's nothing there, it's probably because you've got Cut the Rope installed. The app has recently been removed from the store (like the Kindle app was for a little while) and so don't uninstall it - I did trying to work out which app had been removed and now regret it.
I hope it will return soon... along with a paid version with more levels (the free version doesn't have enough!).