Yes, she might be. JK Rowling has been quite creative over the years. Given her past success with the Harry Potter series and other works, it's very likely that she is exploring new story ideas. However, as of now, there may not be an official announcement regarding a completely new story.
JK Rowling has been involved in new stories that could potentially include more about the magic system in her fictional universe. Maybe new spells, magical creatures, and how they interact with the human characters in the wizarding world. For example, she might explore how different magical creatures contribute to the overall balance or chaos in that world.
The 'Harry Potter' series is the most famous. It has captured the hearts of millions around the world. The books are filled with magic, friendship, and the battle between good and evil.
Some of her well - known novels include the 'Harry Potter' series which consists of seven books like 'Harry Potter and the Sorcerer's Stone', 'Harry Potter and the Chamber of Secrets' etc. These novels are about a young wizard Harry Potter's adventures at Hogwarts School of Witchcraft and Wizardry.