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The girls are actually making their comeback earlier than expected as they were expected to be ready around the end of March or earlier in April. But, it seems they're already done with most of their preparations as the release date is set for March 17!
4minute will be dropping their 5th mini album '4minute World' then and to remind fans to mark the date, they've released the teaser photo you see above.
So get ready for some 'hot issue' as the date approaches!