http://www.eurogamer.net/articles/20...the-taken-king
A logo reminiscent of the Hive suggests a return to the story of that particular alien race. The Taken King itself may be a reference to Oryx, whose son Crota you squashed in The Dark Below.

The leaked schedule, which emerged last year, suggested the expansion would offer far more content than the first two Destiny add-ons.

It's believed The Taken King, previously known under its working title of Comet, will effectively be Destiny 1.5. The schedule also indicated that it would be released in a boxed version (presumably in a Game of the Year-style package with all other Destiny content launched thus far).