Complex sentence: They are the first installments in the seventh generation of the "Pokémon" series of role-playing games, and are set to be released worldwide in November 2016, commemorating the franchise's 20th anniversary.
Split into simpler sentences: They are the first installments in the seventh generation of the "Pokémon" series of role-playing games. The games are set to be released worldwide in November 2016, commemorating the franchise's 20th anniversary.