The A320 family has been a great success for Airbus. In service since 1988, it has overtaken the 737 in narrowbody orders (but not deliveries). There have been many upgrades and developments, most notably, of course, the A320neo. The next version could be a new clean-sheet design, according to Airbus. And possibly in service in the early 2030s.
This is a companion discussion topic for the original entry at https://simpleflying.com/airbus-a320-replacement/