Well this is interesting. Apparently someone pinged a rather tasty document over to the folks at IGN, leaking story details and concept art for Bungie's forthcoming follow-up to the Halo franchise following their split from Microsoft.
According to this document, it would appear that Bungie are looking to create a more accessible game, designed to appeal to a broader range of demographics than perhaps Halo did.
Part of the document contained a background blurb on the game that alluded to this new product being "fun and accessible to all,” and aiming “to create a universe as deep, tangible and relatable as that of the Star Wars franchise.” Apparently, Bungie co-founder Jason Jones is quoted as saying that “Destiny is designed for your inner seven year old. We want to make it feel like a mythic adventure.”
There's a little paragraph on story background too, detailing the narrative setting for the game:
“Our story begins seven hundred years from now in the Last City on Earth, in a Solar System littered with the ruins of man’s Golden Age. A massive, mysterious alien ship hangs overhead like a second Moon. No one knows where it came from or what it’s here for, but only that it’s our protector. Meanwhile, strange, alien monsters creep in from the edge of the universe, determined to take Earth and the Last City. We are young ‘knights’ tasked with defending the remains of humanity, discovering the source of these monsters and – eventually – overcoming it.” Elsewhere in the document, the massive alien ship is referred to as “the Traveler.”
Bungie have updated their own site in rather good-humoured fashion, with community man DeeJ posting the following: "Go ahead. Take a peek. It’s alright. We weren't quite ready, but we will be soon, and we can’t wait to finally show you what we've really been up to. Stick around, we haven’t even started yet."
Bungie also officially released one of the pieces of concept art, which you can see at the head of the article, though IGN has a few more from the document that they received.
Details from the contract between Bungie and Activision surfaced during the ongoing "Wempella" court case back in May, confirming Destiny's name, tied exclusivity on Xbox 360, and pointing towards an autumn 2013 release window.