The initial segment in Central Valley has current date of 2032. It depends on if federal government restores funding or if California has to fund itself.

Phase 1 from SF to LA is estimated for 2035-2040. They might do end-to-end service before that with existing tracks and slower speeds, especially from Palmdale to LA. The SF and LA segments require tunneling to get over the mountains.

Caltrain, from SF to SJ, is part of the California high speed rail system, and you can ride it right now. It's now electrified at 25KV, welded rail, concrete ties, and compatible with high speed rail. The Stadler trains are capable of 125MPH but are run slower because there are so many stations.