One tidbit of news on this:
The Mexican Museum has won an $800,000 grant to design and develop its long-sought permanent home in the city’s Yerba Buena neighborhood.
Awarded by the California Cultural and Historical Endowment, the money will go toward drawing up plans for a 40,000-square-foot space, preparing construction documents and helping oversee the building process. Prominent Mexican architect Enrique Norten is designing the museum, whose collection includes 14,000 pieces of Mexican and Mexican-American art.
Last December, the city’s Redevelopment Agency awarded the museum $10.5 million. The project is expected to cost a total of about $14 million. It is tentatively scheduled to break ground in 2013 — and, if all goes according to schedule, open to the public in late 2016.
More at SFGate's City Insider blog
Breaking ground in 2013 sounds about right based on minesweeper's note about the EIR getting prepared in April. Give it 12-18 months for completion, comment and approval, then permits, bids for contractors, etc and we'll be into 2013.