SAN RA,MON, Calif. - Apple spruced up its product line at an event Tuesday while slipping in quiet notice of a software update, now due next week, designed to enhance the privacy of iPhone users at the expense of digital advertisers such as Facebook.Timing for the software upgrade trickled out during a series of announcements for new iPads, iMac computers and more during a pre-recorded event that sometimes seemed like a one-hour infomercial for Apple.Apple also unveiled a new subscription option for podcasts and a gadget called AirTags — coin-sized devices that can be attached to keys, backpacks, purses and other items to help people track them down via iPhone if they're misplaced.FILE- The stunning purple finish for iPhone 12 and iPhone 12.