Slowly, but surely, additions and refurbishments are being added around World Showcase (i.e. Reflections of China). Sometime soon, Canada will be receiving a new 360 degree show.
Mexico has already gotten new film taken, which may replace some of the current late 70s/early 80s footage in "El Rio del Tiempo."
As for Spain, I am not sure of its progress. In fact, I don't even remember seeing it in late June...*shrug.*
Initially, World Showcase was planning to have several additional countries added, including Spain, Africa, Greece, and others. Although this plan was dropped, Norway, Morocco, an outpost, and World Showplace eventually came through in the 80s and 90s.