In the last few years, California’s up-and-coming wine regions have been steadily moving further and further south. First it was Santa Barbara and the Santa Ynez Valley. Then came the wineries of Malibu, and Temecula, near San Diego. Now, California’s must-visit wine region isn’t in California at all: it’s in Baja California, 90 minutes below the Mexican border, in Valle de Guadalupe. And it has legions of in-the-know wine lovers heading there - especially for the Valle Food & Wine Festival , happening October 6-8.