Ivyskin has introduced its new Quattro line of cases for the iPhone 3G. The Quattro T1 is a form-fitting silicone case, offering built-in coverage for all buttons and controls, solid polycarbonate protectors for the sensors and rear Apple logo, and an included screen protector and Dock and headphone jack plugs. It is available for pre-order in black, red, white, or blue, and sells for $35. The Quattro T2 is a hybrid-style case, featuring an inner silicone skin, an unique Xylo Glass Touch-Thru screen cover that allows for use of the touch screen through the glass, and an outermost layer of hard polycarbonate that snaps in place over the silicone skin and has a built-in polished aluminum faceplate. Available for pre-order in black, red, or blue, it sells for $45. Finally, the Quattro T3 is a two-piece, snap-together hard polycarbonate case featuring a built-in Xylo Glass screen protector, protection for all buttons and the Dock Connector port, open access to the ring/silent switch and headphone jack, and an outer layer of silicone for a soft feel. It comes in white, red, blue, or black, and is available for pre-order for $45. All three cases are expected to begin shipping in mid-November.