http://www.wmspartners.com/cms/uploads/Project/Product_19_2.jpg
Source: http://www.wmspartners.com/project_details.php?id=19&category_name=Office

Foundry III represents the final phase of the Foundry Square master plan totaling 1.2 million square feet. It will be on the southwest corner of the intersection of 1st and Howard Sts., the other 3 corners being already occupied by the other buildings of the plan:

http://www.webcor.com/files/cache/3539430f729586839a021fb2591ae101.jpg
Source: http://www.webcor.com

will start construction in July . . . .

Foundry Square III is the final phase of a four-building SoMa campus that Studios Architecture designed more than a decade ago. Three of the buildings are complete and are anchored by Orrick, Herrington & Sutcliffe, BlackRock Inc., and Gymboree. Two of the Foundry buildings have been on the market in recent weeks and both are fetching significantly more than replacement costs. State Teachers Retirement System of Ohio is reportedly in contract to pay $240 million, or $715 a square foot, for Foundry Square I, a deal that would represent the first major sale over $700 a square foot since the financial crisis of 2008. The 334,000-square-foot building at 400 Howard St. was constructed as a build-to-suit for Barclays Global Investors, which merged into BlackRock in 2009 . . . .

The 10-story Foundry Square building is designed to achieve a LEED Gold and features 13-foot finished ceiling heights and expansive floorplates that range from 22,771 square feey to 35,531 square feet.

“This floorplate design and size really serves the tech tenant demands and needs perfectly."
Source: http://www.bizjournals.com/sanfrancisco/blog/real-estate/2012/04/tishman-speyer-to-start-foundry-square.html?page=all

Something's happening--test cores I assume (sorry for the bit of finger in the way):

http://i185.photobucket.com/albums/x128/BSTJr/IMG_0604.jpg?t=1337903986

http://i185.photobucket.com/albums/x128/BSTJr/IMG_0612.jpg?t=1337904008

http://i185.photobucket.com/albums/x128/BSTJr/IMG_0609.jpg?t=1337903986

Foundry Square III, a SoMa structure to be delivered at year’s end. The building doesn’t have a tenant yet, but rumors are that Google is interested.
http://www.bizjournals.com/sanfrancisco/print-edition/2013/05/03/new-office-towers-to-crowd-san.html