First Look At Hugh Jackman On Set Of X-Men: Days Of Future Past
Along with the image, Singer posted "Fitting."
Perhaps he not only means a costume fitting, but fitting that Jackman is back on X-Men as well.
It will be interesting to see what they do with Wolverine in the movie as he is the one X-Men character than can actually be alive in all the various timelines due to his healing factor that keeps his age at bay.
X-Men: Days of Future Past has a July 14, 2014 release date starring Jennifer Lawrence, James McAvoy, Michael Fassbender, Nicholas Hoult, Anna Paquin, Ellen Page, ShawnAshmore, with Hugh Jackman reprising as Wolverine, and returning cast members Patrick Stewart and Ian McKellan.