The NY Times says HarperTeenImpulse will begin sales December 4th. The piece goes on to report:
“Its first titles include “Breathless” by Sophie Jordan, described as a companion novella to Ms. Jordan’s popular “Firelight” fantasy series about a dragon in human form, and “Stupid Perfect World,” a futuristic novella by Scott Westerfeld, author of the beloved “Leviathan” trilogy, which mixed alternative history with science fiction.
Impulse says it will make up to four new books available on the first Tuesday of every month through e-book retailers, at prices ranging from 99 cents to $2.99. HarperCollins will back up the Impulse books with dedicated marketing, social media outreach and cross-promotion in HarperTeen print books.”