All this week, San Francisco's Moscone Center is hosting the annual Game Developers Conference — but literally right next door, Apple is preparing the Yerba Buena Center for Monday's big event, which is where Tim Cook and co. are expected to announce the final details of the Apple Watch. The decorations began in earnest today with the raising of the banner.

Above: This is generally where Apple has traditionally put its hands-on area following Yerba Buena press conferences.

The banner on the front door matches Apple's "Spring Forward" invitation.