I would love to see this lens released in the next year or so. But expect it to cost $2,500+. Though I would gladly pay that... <24mm presents a bit of a hole in my camera bag. Even with the Sigma 12-24mm... I'd love to have something faster with better corner performance.
5D mark III, 7D, Sigma 12-24mm II, 24-70mm f/2.8L II, Sigma 35mm f/1.4, Sigma 50mm f/1.4, 70-200mm f/2.8L IS II, 85mm f/1.2L II, 100mm f/2.8L, 135mm f/2L, 2x TC III