Three Apple suppliers have delivered samples of flexible circuit boards for the iWatch as the device is now expected to be unveiled in September, reports DigiTimes. Screen-centric iWatch concept by DesignerEI Flexible PCB suppliers Flexium Interconnect, Zhen Ding Technology Holding and Career Technology reportedly have delivered FPCB samples for use in iWatch devices to Apple for validation, according to industry sources. The news follows a report yesterday from Taiwan’s Economic Daily News which indicated that the