The three remasters will mostly have the same contents from the original games. They’ll run at full-HD 1080p and 60 frames per second.
Yakuza 3’s remaster will release in Japan on August 9, 2018 for 3,990 yen. It’ll come with a download code for its soundtrack. The Yakuza 4 remaster releases in Japan sometime in Fall 2018 and Yakuza 5 in Spring 2019.