Is there a new scanlated chapter in highschool of the dead

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Been waiting for the next chapter in highscool of the dead. what dom you think happened that they have been stuck with ch 29??? haven't watched the anime of it, but I heard that they are done already with that series. did you watch it? is it true that they have the ending of the story? I'm just wondering here, how could it happen when the manga's still not done?