Don't think it's been posted.
Anyone looking to see it again or in Imax 3D can win one of the cool Japan Flag Imax posters, just buy a ticket to tomorrows first evening (after Matinee) showing at a Regal Theatre in IMAX 3D.
http://www.regmovies.com/Theatres/IMAX
I already confirmed with my local Regal that's the 6:30 showing here. May be different where you live.
Hopefully this helps keep ticket sales from tapering off. I think if it survives the X-men opening weekend and maybe one more its good to go as high as current predictions take it. DOFP isn't doing as well today but with its high reviews I'd be surprised if it doesn't close the weekend strong. Then again the best X-men, First Class IMO didn't do too hot financially.