With the spring timetable revision coming into effect March 14, maximum operating speed on the Tokaido Shinkansen will be raised from 270 to 285km/h. An exhibition run with passengers was carried out this Wednesday. The top speed of 285km/h was reached at eight locations between Toyohashi and Mikawa Anjo Stations. With the new schedule 1 train per hour will be run at the higher max speed. The journey time between Tokyo and Shin Osaka will be shortened by three minutes.
http://www3.nhk.or.jp/news/html/20150225/k10015737711000.html