Jean Grey to appear in Wolverine Sequel?

I read recently that Famke Janssen is rumored to have flown to Sydney to film a scene for The Wolverine...

I'm going to consider it true, but I also think that the scene she'd appear in will be something of a dream/alternate reality because of this pic -

That's the logo for the Jean Grey School for Higher Learning, so it kinda makes sense that Jean Grey shows up.

I'm curious where Millar will go with this...