July 8 - Official announcement of the album and the concept.
July 9, 10, 11, 12 - Photos + teaser+ teaser photos of the members.
July 13 - Public MV trailer.
July 17 - Album highlight melody release.
July 22 - Public release of album plus full MV release.
July 25 - F(x) comeback
July 27 - F(x) will perform @ MBC for their comeback


source :  SMTown (FANS PAGE)