The Canon 500mm f/4L IS II and 600mm f/4L IS II lenses were announced in February 2011, with availability initially set for May and June for the respective lenses.  In May, the availability date for these lenses was pushed back to December 2011.

Canon dropped a press release yesterday to simply say that availability is “yet to be determined” for these lenses – presumably to make it official that Canon will miss the December ship date.  As for the 200-400mm f/4L IS lens, it’s TBD as well.

Official word from Canon is in the press release below. [Read more…]