Nintendo Power 20th Anniversary Secret

Nintendo Power has another secret game, that they will be revealing in their next issue(20th Anniversary Issue).

First off, the riddle that came from the recent magazine, read it and think of the first game that comes to mind.

"We're kicking off the next 20 years of Nintendo Power with more big reveals, including a top-secret cover story fit for a king. Its got a lot of heart. Just kidding. Its Mother 3. Just kidding. Please look forward to it." -Nintendo Power

My guess would be Kingdom Hearts 3 or Little Kings Story(doubtful though).
I chose Kingdom Hearts because of...
"Its got a lot of heart."
"fit for a king"
"its Mother 3"

The 3 might be a stretch, but I really doubt they would joke about Mother 3 without having a purpose for it, the king could stand for Kingdom or for Mickey(king) and the heart should be self-explanitory.

What are your guesses? Kingdom Hearts 3? Little Kings Story? Me overthinking?
Stay tuned.