[INFO] THSK 4th Japanese Album - The Secret Cord

Now, the vocal group TVXQ have the most momentum.
Full of hit singles. To be released on March, TVXQ's 4th album title, "The SecretCord" is already determined!

In the NHK Kohaku festival they sang "どうして君を好きになってしまったんだろう?"... A hit throughout Asia, "Jumon-MIROTIC-"... and then there was their latest single release... "Bolero" was fully recorded and included in the enhanced 4th abum. The DVD includes a audio speech by each of the members and their fan Sekine Tsutomu is also included in the 3rd LIVE TOUR digest video recording.

At the same time, the title of the album and arena tour has already been announced and decided, "4th LIVE TOUR 2009 ~ The Secret Cord ~". Following to last year's, it will become the arena tour resulting to high performance as being expected from TVXQ.

Also today, the movie - Subaru - with the main theme, "Bolero" and a song in the NTV "Zoom In!! SUPER" "Zoom In! Saturday," the theme of the autumn weather "Kiss The Baby Sky" recorded in a powerful triple-side single was released! In particular, the musical arranger and songwriting members, Yoochun Jaejoong music being recorded, was in the spotlight.

Source: News2u

I believe its out for Pre-Order in CD Japan. Check these links out:
New album release from Dong Bang Shin Ki (Tohoshinki) includes single track "Doshite Kimi wo Suki ni Natte Shimattan Daro?," theme song to the TV drama "Taioushinjiki," "Sennen Koiuta," main theme to the film "Subaru,""Bolero," intro theme to the anime series "ONE PIECE," "We Are!," and more for 14 tunes total (subject to change).
Jacket A - 2CD + DVD - ￥4800 / USD 53.13
Jacket A edition includes bonus CD and DVD with seven music videos and digest fotage of their "3rd Live Tour 2008 - T -" performance.
Jacket B - 2CD - ￥3333 / USD 36.89
Jacket B edition includes bonus mix CD.
Jacket C - ￥2667 / USD 29.52