User blog comment:NOBODY/Nitrome Wiki weekly update: April 27 - May 3/@comment-5216056-20150505195839/@comment-1455034-20150505203717

When Nitrome revealed SM2, they said it was on hold and they may continue work on it in the future. However, as of now Nitrome said they probably will never go back to it, but it's possible (but very unlikely) they may continue work.

Thanks for highlighting this, because after going over the sources again I've changed the status back to "cancelled" to better reflect what Nitrome meant.