Apple is expected to unveil new versions of the iPhone and Apple Watch on Tuesday, although experts are predicting few major updates compared to last year's device. A computer chip shortage, also linked to the pandemic, could have an impact on the pricing and availability of the new devices announced, experts have warned. According to Catherine Hiley, some 10 million consumers say they are planning to upgrade to the next generation of iPhone in the coming year so the pressure is on Apple to deliver the goods.