Westward Journey Nickel Set Question

I've just put together a full set of mint rolled WJ nickels from 2004 to 2006 and will keep them in the sealed mint boxes.
Along the way I picked up a six nickel 2004 and 2005 set. They contain an uncirculated P, a D and a Proof S or each nickel.
There appears to be no "Return to Monticello" 2006 set, and I can't find anything about them on the US Mint site. Why would the mint release a 2004, a 2005 and not something to complete the set for 2006, or am I missing something? Will they release next year or something?
John
Along the way I picked up a six nickel 2004 and 2005 set. They contain an uncirculated P, a D and a Proof S or each nickel.
There appears to be no "Return to Monticello" 2006 set, and I can't find anything about them on the US Mint site. Why would the mint release a 2004, a 2005 and not something to complete the set for 2006, or am I missing something? Will they release next year or something?
John
0
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It isn't listed on the Mint page as a future scheduled release, but then again, neither was the Golden Buffalo.
John
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