As well as adding motors to its existing lenses, Tamron has also started building motors into its new Nikon-compatible lenses. The 28-300mm f/3.5-6.3 VC lens offers a 10.7x zoom range with the company's proprietary optical stabilzation system. DX-format users get fields of view equivalent to 43-465mm (in FX terms).

Source: News: Digital Photography Review (dpreview.com)