iSkin has introduced its new solo and revo4 cases for the iPhone 4. The solo is a form-fitting translucent case made from a “phthalate-free” polymer, featuring a glossy back and button covers, matte finished sides, open access to all ports, controls, and the camera, and embedded Microban antimicrobial protection. It is available in five colors and will sell for $15 during August, rising to $30 on September 1. The revo4 is another form-fitting case, made from hypoallergenic, Microban-treated silicone, and featuring integrated port and push-through button covers, two-tone color schemes, and a hard-plastic VISOR that snaps over the screen to protect it when traveling. It is available in four color combinations and is priced at $40.