This got lost at the bottom of a press release.
Source: http://www.bethblog.com/2014/01/23/the-elder-scrolls-online-voice-cast-revealed/ZeniMax said:The previous chapter in this franchise was The Elder Scrolls V: Skyrim® which was released in November 2011 and enjoyed worldwide critical and commercial success. As the sequel to the 2002 Role-Playing Game of the Year, The Elder Scrolls III: Morrowind®, and the 2006 Game of the Year, The Elder Scrolls IV: Oblivion®, Skyrim earned hundreds of Game of the Year awards and sold over 20 million copies.