Del Frisco’s Grille will open at 300 Colorado St., Austin, in the space previously occupied by Sullivan’s Steakhouse, which closed in January to make room for a new $175-million office tower. 300 Colorado is expected to be completed in December 2020. An opening date for the restaurant, which is owned by the same restaurant group as Sullivan’s, has not yet been announced. www.delfriscosgrille.com