EU had approved a regulation to make the electronic version of the Official Journal authentic and have legal effects. Section I.3 states that "The proposal provides that only the Official Journal published in electronic form shall be authentic and shall produce legal effects. However, in exceptional and temporary cases of unforeseen disruption of the electronic publication the printed edition would have legal value.".
This will impact citations to legislative acts of the Council and Commission under T3.3 of the Blue Book.
Source: FCIL-SIS listserv