It'll be interesting to see how much of an effect this has. Construction in Berkeley is still extremely difficult. Neighbors have many ways to oppose new construction, and something as simple as adding an extra room to a house can end up requiring multiple city council votes.
Still, I'm excited to see things moving in the right direction. Berkeley is fundamentally a university town with one of the best public universities in the world, so making it affordable to live in Berkeley is providing a great opportunity to many people.