Complex sentence: Competitors have included the Airbus A300, A310, and A330-200, while a successor, the 787 Dreamliner, entered service in October 2011, despite this, the 767 still remains in production.
Split into simpler sentences: Competitors have included the Airbus A300, A310, and A330-200, while a successor, the 787 Dreamliner, entered service in October 2011. Despite this, the 767 still remains in production.