Previously IU(アイユー) was revealed to make her comeback with a new album in April, but since the filming of KBS's drama 'Producers' will kick off soon this March, her agency has released a statement saying that the comeback schedule might be pushed back after she wraps up the filming for 'Producers'.
A rep from Loen Entertainment 発言しました on March 10th,"She will continue with the recording of the new album while she's filming for the drama. The promotions can only happen after the drama concludes".
IU(アイユー) has been casted to play as a 上, ページのトップへ 星, つ星 in 'Producers' along with Cha Tae Hyun, Gong Hyo Jin and Kim Soo Hyun. It's scheduled to broadcast every Friday and Saturday this April.
source: link