We live near Edgewood and Lakeview. We got the "your neighborhood is entering engineering phase" email in June. No updates since then. My son lives on Hillcrest near Edgewood Park. He called Sonic yesterday and they told him it would be about 6 months before service was available in that area (the fact that they gave an estimate makes me believe that progress is being made in Redwood City).
For Emerald Hills, I'd plan on early 2022 at best.