The base game will transfer over if bought digitally before January 15, 2015 1 AM. And as far as I know is still valid.
The Dark Below and House Of Wolves still transfer for free.
TTK never transferred for free.
You will need to buy TTK.
English
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I bought ttk as well, will it transfer If I bought it?
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(Bought it for ps3 that is)
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No it won't.