General Terms:
* Book Jacket Promo: This is the most straightforward and clear option.
* Book Cover Promotion: Emphasizes the visual element of the jacket.
* Book Marketing Material: This is a broader term that includes other promotional materials like bookmarks or flyers.
* Book Launch Campaign: This encompasses all promotional activities surrounding a book release.
More Specific Terms:
* Book Jacket Teaser: Highlights a specific aspect of the jacket design to generate interest.
* Book Jacket Reveal: Used when officially unveiling the final jacket design.
* Book Cover Sneak Peek: Shares a glimpse of the jacket before the official release.
Other Options:
* Book Jacket Ad: If it's a paid advertisement on a platform like social media.
* Book Cover Art Campaign: If the focus is on promoting the artistic elements of the jacket.
Ultimately, the best name will depend on the specific context and purpose of the promotional activity.