From the U.S. Postal Service announcement on October 22, 2019:

Made of Hearts is a continuation of the Postal Service tradition of creating stamps that celebrate love. The stamp features horizontal lines of red and pink hearts on a white background. Toward the center, red hearts in varying sizes replace pink hearts in a formation that creates one large red heart, the focal point of this graphic design. This stamp is just right for thank-you notes, get-well cards or any occasion when love is the perfect message. Art director Antonio Alcalá designed the stamp..

The Scott catalogue number for this issue is 5430

Additional information will be posted below the line, with the most recent at the top.

This stamp will be issued Thursday, January 23rd in Memphis, Tenn.

December 20th: Here are the first day cancels for this issue:

The DCP measures 2.63″ x 1.50″The B&W pictorial measures 2.97″ x 1.48″

Also December 20th::

[press release]
Love Stamp is Made of Hearts

WHAT: Made of Hearts, the latest stamp in the U.S. Postal Service’s Love series, will be issued next month in time for Valentine’s Day. The Forever stamp features horizontal lines of red and pink hearts on a white background.

The first-day-of-issue event for the Made of Hearts Forever stamp is free and open to the public. News of the stamp is being shared with the hashtag #LoveStamps.

WHO: David E. Williams, chief operating officer and executive vice president, U.S. Postal Service

WHEN: Thursday, Jan. 23, 2020, at 11 a.m. CST

WHERE:
St. Jude Children’s Research Hospital
501 St Jude Pl
Memphis, TN 38105

RSVP: Dedication ceremony attendees are encouraged to RSVP at: usps.com/lovestamps.

Background: These new stamps from the U.S. Postal Service will deliver your message in style. Hearts are used to signify more than romantic or eternal love. Hearts are universally understood to symbolize devotion, affection and love.

While issued for use at Valentine’s Day, these stamps need no special holiday. This stamp is just right for thank-you notes, get well cards or any occasion when love is the perfect message.