The article says 30, and when he cancelled the Zumwalts, Gates also said that additional Burkes were being procured. The 55 hulls were supposed to be LCS, and those orders are being continued.
Won't happen. There are three Zumwalts funded, and that's it. DARPA "Technology demonstrators." The 55 LCSes are also finished. May be a dozen, tops. More likely less. 108 P-8s? Not a chance. Look for more UCAVs to be the majority of military aviation by 2030.