A 225,000 SQFT, six-story office building a the end of Santana Row is going to break ground this year--with or without a tenant. This is known as building on spec (speculation). Usually developers don't do this unless the market is extremely strong.
The building will be unique for San Jose. It is being modeled similar to a loft building in SF's SoMa district than your typical office building here. The ceilings will be huge with giant floor plates, ideal for modern companies focused more on collaboration rather than a cube culture.
Also part of the plan will be 1,500 SQFT of retail on the ground floor (why not more?) and 670 underground parking spots that will be usable for Santana Row visitors during nights and weekends.