Jay Z and Beyonce Knowles

Pop diva Beyonce announced that she and Jay-Z would be co-headlining an "On The Run 2" tour this summer, but the post was quickly deleted. According to Complex magazine, the Facebook post was taken down within minutes. However, fans were quick to capture screen grabs of the listing, which said the first concert would kick off on Monday, July 30, at Philadelphia¿s Lincoln Financial Field.