I was looking in there a while ago to see what new exotics were coming out and I think within the last 2 weeks all previous exotic armors for all classes show they have a TTK year 2 version now. It's speculation but I'm guessing bungie might have decided to add all the older ones in but it's definitely not implimented into the game yet.
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The two I mentioned above were in the armory as year 2 versions before the taken king even came out. But yea they are probably going to roll them out slowly over time I guess =/.