Heart of The Country revisited

Paul McCartney tweeted a new YouTube video link the other day. It turned out that the video was uploaded by a new user, "Linda McCartney". The video in question is a 44 seconds excerpt of a cartoon, illustrating the song "Heart of The Country" on the Ram album. The soundtrack is Paul singing the song again in a new arrangement. So....a belated effort to promote the Ram remaster? Or the start of something new? Perhaps another of McCartney's forrays into animation?