The following was tweeted earlier today by @KenjiTsumura:

Kazuya "Chief" Mitamura won Pro Tour Honolulu in 2009 and has two Grand Prix top eights and is regarded by many as one of the leaders of the Japanese pro scene.

Grand Prix Kobe was originally scheduled for earlier this year, but due to the earthquake that hit Japan Wizards decided to postpone it. It was originally scheduled to run Mar. 19-20, 2011 and will now run Apr. 23-24, 2011. For more information on the event, check out the event details on Wizards.com.