Japan Railway has recently announced that they will begin offering free Wi-Fi on all Shinkansen lines during the current fiscal year that ends in March.
Despite strong demand from foreign visitors, only a limited number of bullet trains have wireless Internet access at present.
The new service will be available on all the following trains, including Tokaido Shinkansen which many foreigners use to travel between Tokyo and Kyoto / Shin-Osaka.
Akita Shinkansen - by May 2019
Hokuriku Shinkansen - by September 2019
Tokaido Shinkansen - by March 2020
Sanyo Shinkansen - by March 2020
Kyushu Shinkansen - by March 2020
Yamagata Shinkansen - by March 2020
Japan Railway will also start to offer free Wi-Fi on more trains on the Hokkaido, Tohoku and Joetsu Shinkansen lines.
Your seat is reserved and secured when you book your tickets. Head to the station with a peace of mind.
Better seats and free blankets. Popular among Japanese business persons, executives and people who
Know as "First Class" of Shinkansen seats. Only available on Hokuriku and Tohoku Shinkansen lines.
You can take any open seats in unreserved cars of any train on the departure date. (No departure time will be indicated on your tickets.)
The best seat type if your priority is the cost and are traveling during less-crowded season/time.
For further information and photos, please visit official page at http://www.jreast.co.jp/e/ticket/types.html