The California High Speed Rail authority has just announced decisions on rail alignments.  See https://hsr.ca.gov/high_speed_rail/project_sections/sf_sj.aspx  for information on any segment.  
I'm still of the opinion that High Speed Rail is worth supporting.  There is huge demand for travel from northern and southern CA, which is expected to continue growing well past the capacity of SF Bay Area airports.  I-5 and US-101 are already jam packed for way too many hours of the day.  So IMO the demand is there.  Also, it seems extremely unlikely we will ever get a new airport built.  Nobody wants to listen to the noise of jet engines near their homes.