Spring of 2016 is what I believe the release is aimed for.
When they say 10 years in the making, they include the first day someone was like "Hey I got this idea for a game..." since then it could have been on a back burner while working on other things, when they finally got down to it, it may have taken 3-5 years at most I would think. 
The 3-5 years is a guess
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	Ok thank you for correcting me.I didn't know all the details on Destiny and when it originally began.
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	I do not either...as I said, 3-5 years is a guess, but when someone says X amount of years in the making, they mean from the very beginning
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	Well either way thank you for giving me the information.
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	No problem...wasn't sure if you were being sarcastic