Back in late June Wizz Air announced on their facebook page two new routes (NCE and GOT) and a 10th aircraft for Bucharest starting mid April 2018. Nothing mentioned so far on their website in the News section. Those new routes seems to be bookable though.
Strange that Sofia don't get any more aircraft but additional 22 weekly flights.
Never the less W6 keeps expanding at their main bases despite more competition from FR. Just Prague remains a small base compared to BUD, WAW, OTP, BRU