The tech billionaires behind a project to build a utopian new city in California's Bay Area have released the first artistic renderings of their ambitious plans. Previously known only as 'Flannery Associates,' the group rebranded as 'California Forever' and released the plans in a publicity blitz on Thursday night, following months of silence and speculation. Led by former Goldman Sachs trader Jan Sramek, the group's backers include Silicon Valley heavyweights such as LinkedIn co-founder Reid Hoffman, Andreessen Horowitz investor Marc Andreessen, and Steve Jobs' widow Laurene Powell Jobs. California Forever is now the largest landowner in Solano County, which is...