Tamron’s new new 150-600mm f/5-6.3 DI VC USD lens that is set to replace the current 200-500mm version will be available in the US on January 17, 2014. Tamron still hasn’t released pricing on the new lens; however, I would expect it to come in higher than the $949 street price of the existing 200-500mm lens.

Tamron offers a little more detail into the build of the lens with its latest press release.

Employing 20 elements in 13 groups and boasting an advanced optical design, the lens delivers a superior balance of resolution and contrast for sharp, clear images. The front group contains three LD (Low Dispersion) glass elements (two in the first group, one in the third) for enhanced optical correction effectiveness, enabling the lens to thoroughly compensate for on-axis aberrations at the telephoto end. The lens also adopts eBAND Coating, developed from state-of-the-art coating technologies, and conventional BBAR (Broad-Band Anti-Reflection) Coating to greatly suppress ghosting and flare even when shooting under adverse lighting conditions.

The new 150-600mm lens is already listed at B&H Photo for Canon, Nikon and Sony mounts; however, as noted above, there is no pricing info as of yet.