The book was confirmed on a promotional poster in the Google Play Store.
The book's release date is unknown and its status is currently on hold.
In the "Endless Summer" series, it is revealed that "Most Wanted 2" is a based on several crazy murder cases in LA by a cult. Since Most Wanted, Book 1 did not feature a cult, this may imply that its sequel will feature one.
In Pixelberry's "Growing From: Rant Ahead, Be Aware" blog, it was stated that the reason for Most Wanted's current hiatus is because it hadn't been as financially successful as "The Freshman" series or "The Crown and The Flame" series. However, they have stated hoping to return to it when the time is right.