Pretty big news today: Airbus has abandoned efforts to create an A320neo-plus and A321-neo-plus. These were meant to further improve upon the neo family as well as respond to the possibly forthcoming Boeing MoM/797 aircraft.
This means that Airbus will likely have to do a clean sheet aircraft in response.
https://www.reuters.com/article/us-airbus-a320-exclusive/exclusive-airbus-suspends-a320-revamp-study-amid-output-problems-idUSKBN1HH1SS