Targus' docking stations have four USB 2.0 ports and two USB 3.0 ports. The stations can handle resolutions of up to 2,048 x 1,152, deliver 1080p video and graphics through DisplayLink and support up to four displays. The stations also come with a DVI to VGA and HDMI to DVI adapters as well as a 2-foot USB 3.0 cable.
The Targus docking stations are US$169.99 and $219.99 and are available now. For those who already own a Targus 3.0 docking station, there are drivers that make the new docks compatible with the Mac and are backwards-compatible.
If you are looking beyond Targus for your hardware needs, you should look at Kensington, which upgraded its docking stations to be Mac-compatible in April, thanks to the same DisplayLink support update that's in the Targus models. Note some of the issues with the DisplayLink tools in Mountain Lion. Henge also had its horizontal dock, which boasts an impressive six USB 3.0 ports, on display at Macworld/iWorld 2013.