The Austin American-Statesman now reports that there is indeed major work underway at the site.
There is major earthwork happening on the 38.8-acre site and the concrete shell of what appears to be a three-story office building is taking shape.The report notes that Apple's ultimate plans, which will take up to a decade to build out, consist of seven buildings totaling slightly over one million square feet and three parking garages housing 5,500 spaces.
There are two cranes on the site, but there are no signs up yet that either describe the project, name the contractor or the eventual occupant.
Entrance sign at Apple's existing Austin campus (Source: Your News Now Austin)
Apple is in the midst of a major expansion of its facilities, from data centers in North Carolina, Oregon, and Nevada to its massive Apple Campus 2 in Cupertino that will house as many as 14,000 employees when it opens in 2016. In the meantime, Apple has been snapping up leased space throughout Silicon Valley and has just broken ground on a small campus in Santa Clara, California that will house roughly 1,200 employees.