f(x) have revealed the first group teaser photo for their upcoming album 'Red Light'!

The SM Entertainment group has been driving fans wild with individual teaser photos ofKrystal, Sulli, Amber, Victoria, and Luna, and the group teaser photo shows that the concept for their third full-length album will definitely be of a unique variety.

f(x)'s official website also has the following message in bright red: "WARNING! Five cats will make a surprise attack at 00:00 AM!"  

Stay tuned for the girls' comeback stage on July 3 and album release on the 7th!