While Amazon probably does have the power to do this (especially given their increasing stranglehold on the eBook market in countries where the nook is not competing such as the UK) you don't need to worry - your royalties are safe. I'm happy to admit it was, of course, an outrageous lie.
So, what April Fools pranks have you pulled/ tried to pull today? (or, been fooled by?)
Some of the classics are up http://www.museumofhoaxes.com/hoax/aprilfool/ for those with a few moments to spend reading.
Have a lovely April 1st all!