Rumor: Is Sharon Osbourne leaving AGT?

While trolling the internet earlier today, one article from BuddyTV caught my attention. In fact it caught my attention so much that I had to look for the tweets in question myself:

From the Howard Stern Show:

Then again, Sharon had to respond:

According to the article this is all news to NBC:

This potential news seems surprising for NBC, as Entertainment Chair Robert Greenblatt said, “This is coming out of context and sort of spontaneously, and we don’t even know what’s going on. And it’s probably much ado about nothing.” Greenblatt had no other comments on the matter at the time.

What do you think? Should Sharon leave? And if she does… who would you like to see replace her?