Announced by the USPS on October 24, 2022.
Home to the most visited national park in the United States, the Great Smoky Mountains boast extensive national forests and a vast array of native plants and animals. Equally rich in history, folkways and culture, they are an American treasure, which the Postal Service celebrates with this new Priority Mail Express stamp. The stamp art captures an iconic mountain scene located near Newfound Gap between Gatlinburg, TN, and Cherokee, NC. In the foreground, a red-tailed hawk flies over the landscape. Art director Greg Breeding designed the stamp with original art by Dan Cosgrove.
New information will appear below the line, with the most recent at the top.
Updated March 7th:
The Scott catalogue number for this issue is 5752
Updated December 29th:
Here are the first-day postmarks for this issue:
The Digital Color Postmark measures 2.83″ x 1.50″ 
There is no pictorial postmark for this issue. This is the B&W postmark.
Updated November 30th:
This stamp will be issued Sunday, January 22, in Gatlinburg, TN, without a ceremony. Gatlinburg’s post office is not open on Sundays.
The Song from Tennessee https://www.youtube.com/watch?v=_n9prNixjbg
Is this Great Smokey Mountains stamp with a denomination of $ 26.95, the most expensive of any face value that the U.S. post office has ever printed?
USPS P.R.C. will probably approve the Rate Increase for EXPRESS mail to $28.75. ( Everything else got approved, this one will PROBABLY be approved too. Competitive vs Market Dominant, more Red Tape, and trouble getting Jet Fuel to some airports.) To be sold as a Pane-4 $115.00
This stamp Is Now Available for Purchase on USPS.COM. The Price Increase seems to have been approved.
https://store.usps.com/store/product/buy-stamps/great-smoky-mountains-stamps-S_129204
from linns scott 5752
Yes.