From the Super Mario Wiki, the Mario encyclopedia
Volume 3 will be available on April 10 2018, as well as Volume 4.
Volumes 5 and 6 will be released on June 12.
The preceding unsigned comment was added by 18.104.22.168 (talk).
- They've been added, thanks for finding that. Mario JC 21:46, 31 January 2018 (EST)