I saw this on my "Fans of Thor" on facebook. Is it real?
The quality doesn't seem good enough for a legitimate marketing piece, plus if a movie poster had been released I'm sure we would have heard about it, and not on facebook.
However, while we've debated casting ad nauseum we haven't addressed how Mjolnir should look. Long handle? Shortened handle? Ultimates style? Personally, I like the hammer somewhere in the middle. The handle should be somewhat shortened to keep with the mythological background, but not overly so. Additionally, the head should be large enough to be imposing, but not overdone like Alex Ross sometimes depicts it.