It seems as if f(x)'s next mini album is already available to be pre-ordered on 2 Korean sites. Both Apple Music and Lees Music are taking preorders for the mini album at 8,800 Won. Seems like the mini album will be fully sold on May 4th.

http://www.applemusic.co.kr/
http://www.leesmusic.co.kr/

Under both of the websites, it shows that f(x) will have 6 tracks as you can see under Track Information. It translates roughly to to: Six Tracks to come.

So we know that there are these three songs already included in the mini album. I wonder what the other 3 songs are going to be..

Source: Apple Music/Wireless Music
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