Do any of you have informations about the second Layton movie development?

I've heard rumors for a while now that at some point a second movie following the release of "Eternal Diva" was supposedly being done. If it's true we all know it didn't happened. Do any of you have any link, images, sources of this being real ? I'm curious about this and trying to digg the subject but I've found very little evidence for now. Thank you in advance