iOS 14.4 and watchOS 7.3 now available: What's new and how to download iOS 14.4 update is now available for iPhone 6s and later users. Similarly, the watchOS 7.3 is now available for Apple Watch Series 3 and later. Ketan Pratap | January 27, 2021 | Updated 08:04 IST iOS 14.4 update is now available for compatible iPhones. Highlights Apple will release more details about the vulnerabilities later. The iOS 14.4 update is about 400MB in size. Apple late on Tuesday released the iOS 14.4 and watchOS 7.3 updates to the general public. These updates were under beta testing with developers for weeks ahead of release. The Cupertino-based giant confirmed the new updates in a release earlier in the day where it announced the availability of all-new Apple Watch Black Unity Collection.