Since the Apple Watch is still a work in progress, Apple is adjusting its marketing materials accordingly. This could be a reasonable explanation for the Apple Watch screen becoming narrower, as noticed by an eagle-eyed reader (via 9to5Mac).
Three weeks ago, Apple introduced the eagerly awaited wearable device, the Apple Watch, and quickly uploaded a video of the device to its official YouTube channel and created a dedicated page on its official website.
Since Apple uploaded a new Apple Watch intro video, a 9to5Mac reader noticed that a few elements of the user interface have been rearranged, such as the notification in the image below showing the temperature for Cupertino. Compared to the previous version, Glances now shows the high and low temperatures in Cupertino.
Another and maybe more important change – as highlighted by the Twitter user Khaos Tian – is that the screen has become narrower. To back his claim, he posted a screenshot of the change.
— Khaos Tian (@KhaosT) September 30, 2014
The Apple Watch has been in the works for three years, as confirmed by Jony Ive in an interview with Robert Sullivan of Vogue. It will launch early next year at a starting price of $349.