Hex has debuted its new Solo Wallet case for the iPhone 4 and iPhone 4S, as well as the Core Case for the fourth-generation iPod touch. The Solo Wallet is a molded hard case featuring a snap-on design, open access to all ports, controls, and cameras, two rear card slots, and a genuine leather exterior. It is available in two colors and sells for $40. The Core Case is also a custom molded hard case, wrapped in premium washed canvas and offering open…