First of all, I and all members of JAC are deeply saddened by the events occurring in Japan as I’m sure all manga followers are. Japan feels like the country of our hearts, because on a weekly basis we come in contact with works created by the Japanese. We encourage everyone to try and help as much as they can and a good place to donate through is the Red Cross.
Understandably, manga is the last thing on the minds of our Japanese friends. So just to update those of you who are unaware (others may have already read about it on MAL), the following will be delayed:
Monthly Jump Square: May (Apr 4) and June issue (May 2) will be combined into one and will be released on April 21st. [So that means Ao no Exorcist, Tegami Bachi, Shin Prince of Tennis and Kurenai]
Weekly Shonen Magazine: The release schedules after March 28th have been under consideration. [This means Bloody Monday Season 2]
Someone asked if Kazue Kato (AnE) has been confirmed safe and the answer is yes. ANN is constantly updating a list of those whose safety has been confirmed and you can check that here.