That is by 2025
https://wizzair.com/en-gb/informatio...321neo-by-2025
Wizzair usually do things by age of aircraft and the oldest two are x1 320CEO and x1 321CEO.
There are already more NEOs in W9 fleet already.
As Luton is constrained by pax then an uplift in seats might go to LGW anyhow first.