There were some doubts in the past if they would find enough money, but probably this is no problem more.
How or when the candidate will be chosen is not known yet.
In 2011 they organized a internet selection , than a semi-final with 32(!) participants on the radio and finally a final with 12.
Altough many people tought Witloof Bay would end last, they barely missed the final with a point.
source: RTBF