It's the all new HTC One in silver with an AT&T logo
So far the all new HTC One (brand new for 2014!) has leaked out in gold, black, and gray. We've seen that it's going to have two cameras, a refined HTC Sense 6, and even HTC has implied that we should expect even better speakers when it's announced on March 25th.
Add one more color to the mix: silver with white trim. So far all the other leaks have had a black trim, but the latest render leaked by @evleaks shows the HTC One in a lighter silver-and-white scheme. It's the same coloring as the original HTC One, though with broader curves and what looks like a full wrap-around unibody instead of the injected polycarbonate sides of the original.
Oh, and there's AT&T branding in the form of a little AT&T globe slapped onto the back.. That's little surprise, considering that AT&T was a launch partner for the last HTC One. Either way, it's our first hint at where we'll expect to be able to see the all new HTC One. Mark your calendar, people, we're less than a month out.