"WE LOVE SURPRISES. WE ALSO HATE SURPRISES: The biz is buzzing about a possible surprise release next week, with a couple of superstar acts the primary focus of the speculation. If somebody is indeed "pulling a Beyoncé," as it's come to be known, who might it be? (5/29p)"
http://www.hitsdailydouble.com/news/rumormill.cgi
They are pretty reliable.