User blog comment:Thomas Macwrecker/Important! Trading/@comment-71.35.50.86-20120811042451/@comment-1140008-20120811175351

The Game Master that was talking about it acted like it was a long way off. "We still have to figure out how we're gonna make sure people don't trick you into trading."

That implies they're still in the planning stages. After planning, you need mechanic development, and beta testing before it's released to test, if it even makes it past beta testing and doesn't get cut.

Also, further developed updates get the priority.