The Tokina AT-X 24-70mm f/2.8 PRO FX Lens for Nikon F mount is scheduled to be released on June 12, 2015, according to Tokina Japan. The price for this lens is around $1,250, you can check price and pre-order links at B&H Photo Video.
Canon EF mount will be released in July, 2015. See sample images of Tokina AT-X 24-70mm f/2.8 PRO FX lens.
via: Tokina Japan