A recent issue of Famitsu revealed that the PlayStation 4 version of Yakuza 4 HD will come out in Japan on January 17, 2019 with a key character recast and redesigned.
One of the main characters in the original Yakuza 4 was a detective named Masayoshi Tanimura. The character's original voice actor Hiroki Narimiya retired from voice acting and as a result Sega and the Yakuza team have decided to not only recast Tanimura's actor but redesign his appearance as well since his original design was based on Narimiya's likeness.
Here's a comparison of the two characters below.
Japanese voice actor Toshiki Masuda will be the new voice of Tanimura as well as the likeness. Famitsu also says some Tanimura's lines will be revised so it's unknown at this time if there will be some story changes made to the character as well.
Yakuza 4 first came out in 2010 for the PlayStation 3 and once tells the story of four separate main characters including series mainstay Kazuma Kiryu. Yakuza 4 features all the hallmarks of the series including street brawls with rival gangsters, sidequests, and optional minigames.
Sega's Yakuza series finally seems to be getting the recognition its fans long felt the series deserved. Successful entries like Yakuza 0 and Yakuza Kiwami 1 and 2 have prompted Sega to double its localization efforts with the hope that simultaneous worldwide releases can be possible.
The Yakuza team is also working on a new IP called Project Judge, though based on what we've seen it kind of just looks like Yakuza but starring a judge instead of a gangster. Expect wackiness.