The A220 is unrelated to the Neo. The Neos are re-engining of the 320 and 330 series (neo stands for "new engine option"): https://en.wikipedia.org/wiki/Airbus_A320neo_family

And while a plane with good bones, the A220 has not been all positives for Airbus: AFAIK they still loses money on the thing, ramping up has been hell as it's not part of any of Airbus's existing lines of procurement, and it's contributed to the already awkward 319neo being DOA.