苦闘中のDropbox、Mailboxを来年2月、Carouselを3月に閉鎖―生産性ツール開発に全力 | TechCrunch Japan

http://jp.techcrunch.com/2015/12/08/20151207failing-to-find-users-dropbox-will-shut-down-mailbox-in-february-2016-and-carousel-in-march/