Concerning tokens for Tier 4

Reiterating the token system: in stead of gear drops T.B.C. bosses will be dropping items, which can be considered “tokens.” Each one of these “tokens” can be turned in for one set item.

Once you turn in one of these tokens for a set item it will not be possible to change it, because every token can only be turned in once.
For example: if you previously picked a Moonkin druid set item, you can’t change your mind afterward and exchange it for either the feral or resto set item.

However, just like the “standard” drop system, you can obtain another token from downing the boss again to acquire a different set item.