After the PC version and the successful Korean version start of the Lineage 2 Revolution the game will be available in this year in Japan in Japanese on iOS and Android.
It will be a basic free to play MMORPG just like the original PC / Korean Smartphone version.
The exactly release date of the Japanese version is unknown. In South Korea the game released in 2016 December and just in the first month NCSOFt and Netmarble earnt more than 170 million USD with it. The game using Unreal Engine 4 so you will need a strong device to run it. Until more information, please stay tuned!