Hacker's Memory contains 73 new Digimon for a total roster of 320, and also includes the original Cyber Sleuth within it. The player can raise these new Digimon even when playing through Sleuth, breathing new life into the 2015 title.
Press coverage of Hacker's Memory
Hacker's Memory will let tamers bring 73 new Digimon back to Sleuth (Published March 21st, 2017)
Gamer publishes new Hacker's Memory screenshots (Published March 21st, 2017)
European Hacker's Memory release to hit in 2018, does not include Cyber Sleuth (Published March 21st, 2017)