Last weekend at WorldCon, Harriet McDougal, the editor of the Wheel of Time series and Robert Jordan's widow, announced that the Wheel of Time Companion (formerly known as the Wheel of Time Encyclopedia) will be published sometime next year, likely November 2015. According to Adam Werthead, the panel moderator and a long time blogger and friend of Dragonmount, the Companion will be around 350,000 words and contain new artwork and maps previously not seen in the series. There will also be an Old Tongue dictionary of about a thousand words and complete profiles on every character (including Bela!). Harriet and Team Jordan have promised to update us when the Companion manuscript heads to Tor for publication.
For more details on the Companion and tidbits from the Wheel of Time panel at WorldCon, please visit The Wertzone.