Apple has released a smorgasbord of updates, and iOS 12.1 is just the start of them. Notably, you can now upgrade to watchOS 5.1 on Apple Watch Series 4 devices. It doesn't include the wearable's marquee ECG feature, unfortunately, but there are new solid-color watch faces and compatibility for features arriving on iOS and Mac, including Group FaceTime (audio only on the Apple Watch, of course) and more than 70 new emoji.
Appropriately, there are other, lower-key updates arriving at the same time. MacOS 10.4.1 brings Group FaceTime and the new emoji while tvOS 12.1 doesn't have any headlining features but should put the Apple TV on par with other releases. All told, you're going to be very busy updating if you have a significant stake in Apple's ecosystem.
Update, 2:11PM ET: Despite initial reports, watchOS 5.1 doesn't include the ECG app -- we've revised the article accordingly.
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