I'd love to believe it's something, but it could very well be routine maintenance or updates. Websites tend to do those things in the dead of night to lessen the interference with user activity.
Has anyone seen the website go down before? Is this the usual image they use?
Not expecting anything, but this is the first time that this has happened and her tour is about to kick off again... Also, why not state that it's down for maintenance or something and ask us to stay tuned? You usually say that when something is coming that you want people to see, right?
Oh well, single in may or june, so it'll be nothing major...