So the first photo of Johnny Depp wasn't an aberration. A series of leaked photos confirms the costuming nightmare. Apparently Depp will be in full "Flying Nun" regalia throughout the movie.
Leaked Photos From THE LONE RANGER Set Featuring Tonto In Full Costume
For more on Johnny Depp and his costume choices, see Depp's Intent Doesn't Excuse Stereotypes and Thoughts on Tonto's Facepaint. For more on the issue of his playing Tonto, see Open Letter to Johnny Depp's Tonto and Why Tonto Matters.