Apple to Use 'San Francisco' Apple Watch Font in iOS 9 and OS X 10.11

Juli Clover, writing for MacRumors:

San Francisco was created specifically for small displays like the Apple Watch, with extra spacing between each letter to increase legibility on the wrist. Since its debut, there has been speculation that it could be brought to iPhones and Macs in the future, due to its clean look on larger Retina displays in addition to the small display of the Apple Watch. That idea was further reinforced with the introduction of the Retina MacBook, which uses the San Francisco font for the lettering on the keyboard.

At first glance, San Francisco was a little jarring. After having spent enough time looking at screenshots of the Watch, it's definitely grown on me. I had a similar reaction to the mockups included in this MacRumors article. Honestly, though, I think that says more about how benign Helvetica and Helvetica Neue are. They're such safe choices that—while they don't look bad at all—they don't have the same sort of personality as something like Lucida Grande, Chicago, or San Francisco. Something with personality replacing something that's just... there, will evoke a strong emotional response. Should Apple adopt San Francisco as a system font for iOS and/or OS X, I don't think it'll be long before it becomes engrained in our brains as the Apple font.

It's sleek, like Helvetica and DIN procreated. It stays true to the whimsical and clean lines of iOS 7 and Yosemite, but infuses a romanticized sense of longing for the future where technology and design intersect. Seems like Apple's wheelhouse to me. Hope this rumor pans out. Something tells me we're on to something considering that MacBook keyboard.