Zeiss has introduced its fourth premium manual-focus lens in the ZE series, the Zeiss Distagon T* 21mm ƒ/2.8 ZE, fully compatible with Canon EF mount. (The 18mm ƒ/3.5 was introduced two weeks ago. The other two are the 50mm and 85mm ƒ/1.4's.) The new lens covers 24x36mm "full frame." The street price has not yet been determined, but the Nikon and Pentax versions each sell for $1,490.
Zeiss USA's Rich Schleuning has posted a flickr page of sample pictures taken with the new lens.
UPDATE: In response to a reader's question, I asked Rich about upcoming ZE Zeiss lenses for Canon EF mount. He tells me that although the four listed above are the only ones officially announced so far, "additional lenses will be announced over the next two months, including the 2/28, 2/35 and the 2/50 and 2/100 macros." —Mike