It is a bit of a moving target at the moment (presumably it is being removed as quickly as possible) but a preview of Adele’s theme song for the upcoming James Bond film Skyfall can be found right here.
Update: Within seconds of me posting this link it has vanished yet again. Doing [a search on Soundcloud for Adele and Skyfall](https://soundcloud.com/search?q=adele skyfall) is your best bet at hearing it at this point.