The official website for the Code Geass: Akito the Exiled series began streaming a new TV commercial video for the 3rd episode titled Code Geass: Akito the Exiled 3 – The Brightness Falls on Thursday. The third episode, Code Geass: Akito the Exiled 3 – The Brightness Falls, will premiere on May 2. The fourth and final episode, Code Geass: Akito the Exiled 4, will premiere on July 4.

The first promotional video was also streamed last December:

http://www.dailymotion.com/video/x2cvrzp_code-geass-boukoku-no-akito-3-pv_news

In addition to this, a new visual was also revealed:

Code Geass Akito the Exiled 3 Anime Visual Revealed haruhichan.com Code Geass Boukoku no Akito 3 Visual

Code Geass: Akito the Exiled is a theatrical OVA. It was officially announced in the bonus materials of Code Geass: The Miraculous Birthday. The new theatrical OVA is directed by Kazuki Akane (of Vision of Escaflowne and Noein: Mou Hitori no Kimi e fame) and once again features original character designs by CLAMP. It is a side-story that occurs between seasons one and two of Code Geass.

Code Geass: Akito the Exiled 3 – The Brightness Falls synopsis from Haruhichan:

Third episode of Code Geass: Boukoku no Akito.

Source: Fandom Post