Nintendo Power's preview page for the next issue brandishes the above image and a quick prank on Earthbound fans (as if they needed more teasing): "We'll kick off the next 20 years of Nintendo Power with more big reveals, including a top-secret cover story fit for a king. It's got a lot of heart. Just kidding. It's Mother 3. Just kidding. Please look forward to it."
What could it be? A sequel to Square's lackluster King's Knight? Even better, perhaps a remake of Capcom's Knights of the Round? What are your gueses?