Complex sentence: However, faced with mounting production costs, RTG decided in June 2014 to return to the episodic format, with the first "book", subtitled "Reborn", to be released on 21 October 2014, and the remaining four at later, unannounced dates.
Split into simpler sentences: However, faced with mounting production costs, RTG decided in June 2014 to return to the episodic format. The first "book", subtitled "Reborn", was released on 21 October 2014, and the remaining four are to be delivered at later, unannounced dates.