Sigma has announced a 50mm f/1.4 EX DG HSM lens, but I'm getting a little leery of calling these things "announcements," as most of the details were not released (configuration, aperture blades, weight, size, filter size, price, or the date it might be available). We still don't have some of the details yet from Sigma's January lens announcements. While this new lens sounds desirable (and is FX compatible), I suspect that Nikon may announce its 50mm f/1.4G AF-S before the Sigma actually appears.