Apple released the first public update to watchOS 4 11am PST on Wednesday morning.
watchOS 4 was initially released alongside iOS 11 on September 19. Included in that update was a new Siri watch face, a redesigned Music app and more.
watchOS 4.0.1 is a small update, weighing in at just about 43 megabytes on my Apple Watch Series 3. The only change in this firmware corrects an issue where a watch might automatically connect to unlocked wifi networks that have never been authenticated before.
This update is only available for Apple Watch models with LTE functionality, so if you’re not seeing watchOS 4.0.1 on your wearable, that’s why. When separated from the paired iPhone, some cellular-enabled Series 3 models would opt to join random Wi-Fi networks rather than falling back to LTE when no known Wi-Fi networks were available.
You can read the full changelog for watchOS 4.0.1 below.
watchOS 4.0.1 fixes issues that in rare cases were causing Apple Watch to join unauthenticated (captive) Wi-Fi networks, such as those found in public like coffee shops and hotels, which direct the user to a web page before the network can be accessed.