Amazon are listing a new 14/2.8L II USM lens. In their description they say...
Designed primarily for discerning landscape and architectural photographers, the Canon EF14mm f2.8L II USM lens is ideally suited to the EOS-1Ds Mark III's full-frame capability. Measuring 3.7 inches in length and weighing in at under 23 ounces, this ultra-wide angle L-series prime lens is well corrected for rectilinear distortion, provides a 114-degree diagonal angle of view, and delivers high-speed autofocus with higher image quality overall including superior peripheral image quality, compared to its predecessor, the stalwart EF 14mm f2.8L USM lens.
While its large diameter, high-precision aspherical and UD elements, optimized lens element positioning, and flare and ghost-reducing lens coating ensure that this lens delivers the top optical performance in its professional class, Canon has added other features photographers have been asking for--improved dust and water resistance incorporated around the mount, switch panel and focusing ring, and a round aperture that creates a nice background blur and makes it easier to recognize an out-of-focus scene in less than brightly lit conditions.
At an initial price of around $2,200, this isn't going to be a lens that many people will buy, in fact it's probably not a lens that many people will need, but for those who do this will be the best ultrawide prime for full frame Canon cameras, digital or film. The current release date is November 15th 2007.