Headline from Coinworld-
"U.S. Mint announces plans for circulating rarity " LINK


So they normally want us to save, collect and buy items they sell at a premium of course, but not collect and hoard the stuff they make for circulation?
They don't say what the intentional "rarity" will be.

Any guesses?

I'll start the "Guess" list....... A proof coin for circulation with a special design feature to separate it from a normal proof.
(A higher denomination coin tho, so it generates more income than it costs to produce it!!!)

They may even be waiting to decide until collectors speculate, to see which "rarity" might generate the most buzz and bang for their buck.