JR Hokakido and East Japan launched the Hokkaido Shinkansen(/Hokkaido Bullet Trains) services on this Mar.26. And with this, Alll the four main lands of Japan are now directly connected by the Bullet Train services. (http://hokkaido-shinkansen.com/)(http://www2.jrhokkaido.co.jp/global/index.html)
The bullet train services between Tokyo and Shin-aomori(/new Aomorri, in Aomori prefecture in Tohoku region in the mainland) launced in 2010, and now the new services between Shin-aomori and Shin-hakodatehokuto started, which finally connected the mainland and Hokkaido island. With this completeion, Tokyo to Shin-hakodatehokuto takes now 4 hours and 2 minutes at fastest (used to take about 5 hours and 30 minutes), and Shin-aomori to Shin-hakodatehokuto one hour and one minute at fastest(used to take about one hour and 50 minutes) . 10 round travels are provided between Tokyo and Shin-hakodatehokuto and one round travel between Sendai and Shin-hakodatehokuto by “Hayabusa”( a nickname of a type of the new trains) a day and one round travel between Morioka and Shin-hakodatehokuto, and one round travel between Shin-aomori and Shin-hakodatehokuto by “Hayate” a day as well.