It has been four years since Apple Inc introduced a completely new gadget and the pressure is on for the world’s largest tech company to wow at its “special event” in Cupertino, California, on Tuesday. Apple has fed the high expectations, with promises by executives that the company’s best product pipeline in 25 years is being readied inside its secretive facilities. Those now ubiquitous gadgets were created under the innovative and famously meticulous eye of Apple co-founder Steve Jobs, who died in 2011.