Updated June 1st: First day postmarks:
Standard 4-bar FIRST DAY OF ISSUE
Digital Color Postmark: from the Postal Bulletin May 27th:
On June 1, 2015, in Kansas City, MO, the U.S. Postal Service® will reissue the Vintage Tulip, two ounce rate mail-use stamp, (Non-denominated priced at 71 cents), in one design, in a pressure-sensitive adhesive (PSA) pane of 20 stamps (Item 589500).

The stamp will go on sale nationwide June 1, 2015.

In 2015, the U.S. Postal Service issued Vintage Tulip, an all-occasion stamp available to accommodate the weight of heavy invitations for weddings and other celebrations, greeting cards, and mailings such as small gifts that require extra postage. The words “Two Ounce” on this stamp indicate its usage value. Like a Forever® stamp, this stamp will always be valid for the rate printed on it. The initial price and value for this stamp is 71 cents. The stamp art features an elaborate floral line drawing of a tulip similar to the design of the 2015 Vintage Rose Forever stamp. Jeanne Greco designed these stamps using details from drawings originally created by naturalist artist Maria Sibylla Merian (1647–1717). A small, deep crimson heart on both stamps adds a dash of color to the designs and makes them a natural pair. These stamps were printed using the intaglio printing technique. Vintage Tulip and Vintage Rose are the latest additions to the popular Weddings series. Greg Breeding was the art director.

How to Order the First-Day-of-Issue Postmark:
Customers have 60 days to obtain the first-day-of-Issue Postmark: by mail. They may purchase new stamps at their local Post Office, at The Postal Store® website at http://www.usps.com/shop, or by calling 800-STAMP-24. They should affix the stamps to envelopes of their choice, address the envelopes (to themselves or others), and place them in a larger envelope addressed to:

71¢ Vintage Tulip Stamp
Cancellation Services
8300 NE Underground Drive, Pillar 210
Kansas City, MO 64144-0001

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 July 31, 2015.

There are five philatelic products for the Vintage Tulip stamp issue:

• 589510, Digital Color Postmark Keepsake, $16.95.
• 589516, First-Day Cover, $1.15.
• 589521, Digital Color Postmark, $1.86.
• 589531, Stamp Deck Card, $0.95.
• 589532, Stamp Deck Card with Digital Color Postmark, $2.21.

Technical Specifications:

Issue: Vintage Tulip Stamp
Item Number: 589500
Denomination & Type of Issue: Two Ounce Rate Non-Denominated, Mail-Use
Format: Pane of 20 (1 design)
Series: Weddings
Issue Date & City: June 1, 2015, Kansas City, MO 64108
Designer: Jeanne Greco, New York, NY
Art Director: Greg Breeding, Charlottesville, VA
Typographer: Greg Breeding, Charlottesville, VA
Modeler: Donald Woo
Manufacturing Process: Intaglio, Offset
Printer: Banknote Corporation of America/SSP
Printed at: Browns Summit, NC
Press Type: Alprinta 74
Stamps per Pane: 20
Print Quantity: 15 million stamps
Paper Type: Phosphor Tagged Paper, Overall
Adhesive Type: Pressure-sensitive
Processed at: Banknote Corporation of America, Browns Summit SC
Colors: PMS 433, PMS 207 (Intaglio)
Stamp Orientation: Vertical
Image Area (w x h): 0.77 x 1.05 in./19.56 x 26.67 mm
Overall Size (w x h): 0.91x 1.19 in./23.11 x 30.22 mm
Full Pane Size (w x h): 5.55 x 5.76 in./140.97 x 146.30 mm
Press Sheets Size (w x h): 16.65 x 23.04 in./422.91 x 585.22 mm
Plate Size: 240 stamps per revolution
Plate Numbers: “S” followed by two (2) single digits
Marginal Markings: Front: Plate numbers in four corners of pane
Back: © 2014 USPS • USPS logo • Plate position diagram • Barcode (589500) in upper right and lower left corners of pane • Promotional text

From the USPS May 26th:
In 2015, the Postal Service issues Vintage Tulip, an all-occasion stamp available to accommodate the weight of heavy invitations for weddings and other celebrations, greeting cards, and mailings such as small gifts that require extra postage. The words “TWO OUNCE” on this stamp indicate its usage value. These Forever stamps will always be equal in value to the applicable price for the price category printed on them, at the time of use. The initial price and value for this stamp is 71 cents effective May 31. The stamp art features an elaborate floral line drawing of a tulip similar to the design of the 2015 Vintage Rose Forever stamp. Jeanne Greco designed these stamps using details from drawings originally created by naturalist artist Maria Sibylla Merian (1647–1717). A small, deep crimson heart on both stamps adds a dash of color to the designs and makes them a natural pair. These stamps were printed using the intaglio printing technique. Vintage Tulip and Vintage Rose are the latest additions to the popular Weddings series. Greg Breeding was the art director.

From the USPS May 18th:
In 2015, the U.S. Postal Service issues Vintage Tulip, an all-occasion stamp available to accommodate the weight of heavy invitations for weddings and other celebrations, greeting cards, and mailings such as small gifts that require extra postage. The words “Two Ounce” on this stamp indicate its usage value. These Forever stamps will always be equal in value to the applicable price for the price category printed on them, at the time of use. The initial price and value for this stamp is 71 cents. The stamp art features an elaborate floral line drawing of a tulip similar to the design of the 2015 Vintage Rose Forever stamp. Jeanne Greco designed these stamps using details from drawings originally created by naturalist artist Maria Sibylla Merian (1647–1717). A small, deep crimson heart on both stamps adds a dash of color to the designs and makes them a natural pair. These stamps were printed using the intaglio printing technique. Vintage Tulip and Vintage Rose are the latest additions to the popular Weddings series. Greg Breeding was the art director.

The first day of issue is June 1, without a ceremony. The city is Kansas City (Stamp Fulfillment Services).