In the wake of rumors that Apple’s 2017 iPhone will feature an all-glass body, Nikkei reports that Apple supplier FoxConn is in the process of developing a glass phone casing. Sources familiar with the developments said FoxConn has been experimenting with the glass chassis since last year, determined to secure its position as a key iPhone assembler. “It is only natural that Foxconn is trying to come up with glass chassis as the capabilities…