What are the sources for this information?

Wikipedia
http://en.wikipedia.org/wiki/Destiny_(video_game)

IGN
http://www.ign.com/articles/2013/02/17/destiny-quick-faq

PA Report
http://penny-arcade.com/report/editorial-article/destiny-bungies-follow-up-to-halo-is-always-online-social-and-it-could-be-t

GameSpot
http://www.gamespot.com/features/destiny-unveiled-what-bungies-next-game-is-and-isnt-all-about-6404016/

"In Search of the Heart of Bungie" by Russ Pitts
http://www.polygon.com/features/2013/1/24/3908184/heart-of-bungie-destiny-jason-jones-marty-odonnell-halo#tothetop

Bungie's 'Destiny' to be announced at GDC
http://www.examiner.com/article/bungie-s-destiny-to-be-announced-at-gdc-xbox-720-and-ps4-release-possible

Bungie-Activision contract
http://rampancy.net/story/legal/21/05/2012/Bungie_Produce_SciFantasy_Shooter_Maybe_More_Marathon

Video game series contract will be tough for Bungie, easy for Activision by Dean Takahashi
http://venturebeat.com/2012/05/25/video-game-series-contract-will-be-tough-for-bungie-easy-for-activision/

New Hints for Bungie's Next Game: Next project codenamed "Tiger."
http://www.ign.com/articles/2011/08/04/new-hints-for-bungies-next-game

Bungie Drops Hint at Post-Halo Game
http://www.ign.com/articles/2010/10/06/bungie-drops-hint-at-post-halo-game

Bungie ViDoc "O Brave New World" by Bungie
http://www.youtube.com/watch?v=OtG6--4r_qk

GDC: Bungie's Next Game Is An MMO (Unless they're joking)
http://www.ign.com/articles/2011/03/04/gdc-bungies-next-game-is-an-mmo

Escapist
http://www.escapistmagazine.com/articles/view/editorials/reviews/previews/10196-Bungies-Words-of-Destiny?utm_source=rss&utm_medium=rss&utm_campaign=news

Second Game In The Works At Bungie
http://rampancy.net/story/rumor/second_game_in_the_works_at_bungie

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