Our friends at The Young Bond Dossier have dug up a secret source to give them the working title of Young Bond book number 5.
The working title is:
The Shadow War
As most fans know working titles can possibly and may likely change—such as the title Double M becoming Blood Fever—but even if the title is changed a working title can give insight and spur imaginations of the upcoming book. Certainly more than a working title like Young Bond 5.