This image was found on somewhat infamous and well known image board. This image board is known for having news early, but for also having a mixture of fake news as well. I would not considered this image solid news that Final Fantasy VI is in the works until an official announcement from Square Enix is made.
However, on a side thought, would you guys purchase a remake of Final Fantasy VI for the Nintendo DS? Or are you tired of their ports and want them to start making new games like The World Ends With You?