Complex sentence: On July 3,2015 via her personal blog, despite no prior warning, Utada posted that she had given birth to a boy and was working on a new album, which was primarily written whilst she was pregnant.
Split into simpler sentences: On July 3,2015 via her personal blog, despite no prior warning, Utada revealed she had given birth to a child; a boy. Along with this announcement, Utada revealed she was working on a new album, which was primarily written whilst she was pregnant.