Oshima Yuko, Sashihara Rino, Kitahara Rie and Yokoyama Yui's AKB48 sub-unit, Not Yet, announced that they'll be releasing their 4th single "Suika BABY" on May 30th. It will be their other summer song after the 2nd single, "Naminori Kakigoori".

The upcoming single will come in 4 types with limited and regular editions. Each limited edition will include the entry ticket for an event for which details have not yet been revealed, and a ticket for bonus listening contents.
Fans can listen to the preview of the single at Not Yet's official website.

In the meantime, check out the track list below.

Suika BABY
<Type A (Limited / Regular)>
[CD]
1. Suika BABY
2. Unknown A
3. Unknown B
and off vocal ver for each songs
[DVD]
Suika BABY music clip and other

<Type B (Limited / Regular)>
[CD]
1. Suika BABY
2. Unknown A
3. Unknown C
and off vocal ver for each songs
[DVD]
Suika BABY music clip and other

<Type C (Limited / Regular)>
[CD]
1. Suika BABY
2. Unknown A
3. Unknown D
and off vocal ver for each songs
[DVD]
Suika BABY music clip and other

<Type D (Limited / Regular)>
[CD only]
1. Suika BABY
2. Unknown A
3. Unknown E
and off vocal ver for each songs

Source : Sanspo & Not Yet official website