No, no new galaxies and matter, just more empty space, with the space between us and the further out galaxies expanding so fast that they become inaccessible ev

No, no new galaxies and matter, just more empty space, with the space between us and the further out galaxies expanding so fast that they become inaccessible even at the speed of light, then those only half as far will disappear behind this horizon of reachability, then those even closer, until only the closest few galaxies will be left in an otherwise entirely empty universe. Even later, space will expand so fast that the gravitational interaction that keeps the milky way (or its successor formed by the merger with Andromeda) will be overcome and every star will be alone in an empty universe, than the stars and planets will be torn apart by the ever faster expanding space, and finally maybe even the atoms and particles from the debris.