«Tamron has announced the development of a 60mm F2 macro lens that provides 1:1 magnification for APS-C sensors. The lens, called the SP AF60mm F/2.0 Di II Macro 1:1, will be available in Canon, Sony and Nikon mounts (with a built-in autofocus motor to allow AF to operate on the D40, D40X and D60). Its design, which incorporates two low dispersion elements to to compensate for various aberrations, lets you achieve 1:1 magnification at a working distance of 100mm. The F2 maximum aperture makes it a whole stop faster than other lenses in the same class. Price and availability will be announced later.»
Looks like a great lens. I'd consider to get one. Will wait to see it's price.