Some people swear by trackballs. They first used them with Windows 3.1 and refuse to look at anything else. For those, and the others that are forced to them at work, Logitech just announced the Wireless Trackball M570 that brings a bunch of standard Logitech features to the platform. Not only is the M570 sporting a lot more modern look, Logitech’s Unifying 2.4GHz wireless receiver connects the input device while a single AA battery powers it for up to 18 months. Expect the M570 to hit office supply stores at the end of the month for $60.