A purported close-up image of Apple's upcoming "spaceship" campus

Apple is reportedly scheduled to start construction of the new "spaceship" campus in Cupertino, Calif., later this year, and now AppleInsider has received a leaked architectural rendering purportedly detailing the curved glass and facade of the new structure.

The structure was the focus of a visit by Apple CEO Steve Jobs to the Cupertino City Council on June 8, 2011, when he described the proposed building as "a little like a spaceship landed." The image received by AppleInsider lists London-based architectural firm Foster + Partners, landscape design firm OLIN, consulting engineering and design firm Arup, and construction company Davis Langdon in a sidebar.

When the campus is completed in 2015, it will house more than 12,000 employees in more than 2.8 million square feet on four levels. Additional structures are planned for the site, with a café and restaurant, fitness center, covered parking and a corporate auditorium with room for 1,000 people.

Other design drawings were published in August by architectural news site ArchDaily, showing floor and landscape plans in detail.