Far Eastern Tribe Records, 4Minute's official label in Japan released several information about the group's first-ever official Japanese Album to be released on December 15, 2010!

They stated:

"4Minute has just finished recording all their songs for their upcoming Japanese Debut Album entitled: DIAMOND. It is a compilation of new edgy sounds from the girls that would definitely be highly anticipated by the fans."

The album will be available in 2 versions that differs by its covers and special content:

Normal Edition: 2800 yen (tax in)
Limited Edition: 3200 yen (tax in) + 52 gorgeous pages of the girls in a Photobook + DVD with 4 MVs.