Kenko Tokina has launched the Tokina AT-X 14-20mm F2 Pro DX lens for Canon and Nikon DSLRs with APS-C sensors. That's equivalent to 21-30mm on Nikon bodies and 22-32mm on Canons.
This ultra-wide zoom has a pair of super low dispersion elements in the back and a plastic aperhical element in the second group that promise to reduce flare and ghosting. It also sports nine aperture blades, a one-touch focus clutch mechanism and internal focusing.
Pricing and availability have yet to be announced.