The 4th K-POP Super Live which is going to be appear Super Junior, SHINee, Shin Hye Sung and The BOSS(D-NA) is scheduled on April 16th at Makuhari event hall in Japan is postponed and make a transfer on May 15th, due to the Japanese huge earthquake.  

reported by @u_roughwell (Yu Arai)
source  DATV official homepage  http://datv.jp/4th-kpop/