Apple rolled out a new virtual fitness service and a bundle of all its subscriptions, Apple One, focusing a holiday-season product launch on services that are the backbone of Apple’s growth strategy and that cater to customers working at home during the Covid-19 pandemic.Apple also introduced a new Apple Watch Series 6 that monitors blood oxygen and will cost US$399 and a more basic Apple Watch SE for US$279.But the bevy of incremental updates to existing hardware and subscription price…