Ryanair made this statement on September 2nd with no mention of a 5th based aircraft. As Ryanair like to blow their own trumpet I find this 5th aircraft a little strange seeing that they still have 18 routes.
London Luton:
4 based aircraft
1 new route to Vilnius
18 routes in total
Extra flights to Copenhagen (4 x daily)
123 weekly flights (13% growth)
1.8m customers p.a.
1,350* “on-site” jobs p.a.