On September 27, California Governor Gavin Newsom signed some bills that change election law. He did not act on AB 446, which makes it somewhat easier for a new party to qualify. Nor did he act on SB 660, which makes it illegal to pay circulators on a per-signature basis.
The most significant bill he did sign on September 27 provides that in the future, all registered voters will receive a postal ballot in the mail. See the Governor’s press release here.