BEAST for an earlier come back?

BEAST left their fans hanging after they revealed that mysterious teaser above.
If you visit their website, you can't see anything else, there's no link to click to know more about. It's a complete mystery for anyone who will see it. 
The teaser read, “BEAUTY, come together!! June 15th, 20:00.” What is that for? A fan meeting? an earlier come back? 
What is clear as of today is BEAST's exclusive concert in July.
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SOURCE: playb2st