http://dia.seesaa.net/s/article/444939626.html
I'm going to take up JR West(covering Kansai and Chugoku) only, because it's troublesome to take all JR groups up.
・More frequent trains in daytime on Sagano Line( nickname of San-in Line in Kyoto suburban section). Local trains will run once in 15 mins, instead of conventional 20 mins.
・All of the special rapid trains will be 12 cars between Himeji-Kobe-Osaka-Kyoto-Maibara.
・Some trains running as Limited Express "Thunderbird" will stop at Takatsuki.
・Kabe Line will be extended to Aki-Kameyama.
・Jike station on Sanyo Main Line will begin service.