They were supposed to reach plurality in summer of 2013, but lower birth numbers among California Latinos is slowing down the numbers.

So now they are expected to surpass whites by March.  

By 2060 Latinos are expected to make up 48% of Californians, given current population projections.  Right now the numbers of whites and Latinos are roughly even with both groups accounting for 39% of the population.  

Meanwhile, despite being the numerically dominant class in California, Latinos are not taking to Covered California.  A Sac Bee story says just 30% of of those who've applied are Latinos compared to projections which show 46% of Latinos are eligible for a subsidy to obtain coverage.