Illustrations added October 21st. Note that the indicia are slightly different than the original stamp designs.

Added October 4th: A nice offer from the United Postal Stationery Society, and open to all collectors, not just UPSS members:

The United States Postal Service has recently announced a new set of 5 postal stationery envelopes depicting various holiday designs and scenes. These envelopes are available in 3 different “mixed” packs of 10 through the “Stamp Fulfillment Center” in Kansas City.  The envelopes are packaged as follows:

2 different “Snowflake” designs in a pack of 10
2 different “Winter Fun” envelopes in a pack of 10
1 “Poinsettia” envelope in a pack of 10

For each collector to obtain all 5 envelopes would cost approximately $30 plus domestic S/H. However, the United Postal Stationery Society will purchase packages and split them into individual sets of these 5 new and different envelopes for $7.50 per set, which includes free S/H to domestic (USA)  addresses.  We understand they will be available for only a short limited time, and if we waited for the next edition of “Postal Stationery” for this offer, it would be too late.   So we are sending emails to all members for whom we have addresses.

If interested contact upsspubs@aol.com  and indicate how many sets you would like.  Payment details can be arranged later.  We plan to order the sets shortly, so do not delay if interested.

Note that delivery may take up to 3 weeks.

From the October 2nd Postal Bulletin:

On October 1, 2014, in Washington, DC, the U.S. Postal Service® will issue three sets of 10 Holiday Stamped Envelopes with seals (Forever® First-Class Mail® priced at $9.95 each) in pressure-sensitive adhesive (PSA) #10 Stamped Envelopes.

The envelope sets will go on sale October 1, 2014.

This holiday season, the U.S. Postal Service® will issue three different festive sets of 10 Holiday Stamped Envelopes, including seals. The stamped envelope artwork is based on stamp art. The Winter Fun set includes five stamped envelopes displaying a red cardinal and five stamped envelopes featuring a child building a snowman. The Poinsettia set includes 10 stamped envelopes, each featuring a bright, cheerful rendering of America’s favorite holiday flower. The Snowflakes set includes 10 envelopes featuring two designs — five of each design. Both snowflakes featured in the artwork were photographed with a digital camera attached to a microscope. The seals included in each of the three sets complement the stamp designs.

Customers have 60 days to obtain the first-day-of-issue postmark by mail. They may purchase the new stamped envelope sets at the Postal Store® website at http://www.usps.com/shop, or by calling 800-STAMP-24. They should address the envelopes (to themselves or others), and place them in a larger envelope addressed to:

Holiday Stamped Envelopes
Special Events
PO Box 92282
Washington, DC 20090-2282

After applying the first-day-of-issue postmark, the Postal Service will return the envelopes through the mail. There is no charge for the postmark up to a quantity of 50. For more than 50, customers have to pay five cents each. All orders must be postmarked by November 30, 2014.

These four items are considered Philatelic Products and will be issued in the following formats:

• 789834, Snowflakes packet of 10 with seals (2 designs), $9.95.
• 688634, Poinsettia packet of 10 with seals (1 design), $9.95.
• 689834, Winter Fun packet of 10 with seals (2 designs), $9.95.
• 689817, Holiday Stamped Envelopes FDC (Set of 5), $3.70.

Technical Specifications:

Issue: Holiday Envelopes: Snowflakes
Item Number: 789834
Denomination & Type of Issue: Forever First-Class Stamped Envelope
Format: #10 Regular Envelope Packet of 10,
2 designs
Issue Date & City: October 1, 2014, Washington, DC, 20090
Art Director: William J. Gicker, Washington, DC
Designer: Jennifer Arnold, Washington, DC
Typographer: Jennifer Arnold, Washington, DC
Existing Photos: Kenneth G Libbrecht
Modeler: Joseph Sheeran
Manufacturing Process: Offset/Microprint “USPS”
Printer: Ashton Potter (USA) Ltd. (APU)
Printed at: Williamsville , NY
Press Type: Mueller, A76
Folding Machine: W&D #527
Print Quantity: 330,000 (165,000 each design)
Paper Type: 61# Postal Envelope, Block, Type III
Adhesive Type: Pressure-sensitive adhesive
Processed at: Ashton Potter (USA) Ltd. (APU)
Stamp Orientation: Horizontal
Envelope Size: (w x h): 9.5 x 4.13 in./241.30 x 104.78 mm
Image Size (w x h): 1.23 x 1.13 in./31.19 x 28.60 mm
Colors: Black, Cyan, Magenta, Yellow, PMS 7671 U Purple, PMS 431 U Grey
Marginal Markings: Sustainable Forestry Initiative Logo
• “THIS ENVELOPE IS RECYCLABLE AND MADE WITH 30% POST CONSUMER CONTENT” • Recycling Logo • © USPS 2014

August 21st: #10 envelopes with two designs, sold in packages of 10, and available at the end of September. First-day postmarks will be available.The designs will be based on the Snowflakes stamps from 2013.