If it's a highly anticipated new novel, there might be some initial reactions on social media or in some niche literary communities. But in general, without knowing the name or more details about the novel, it's tough to determine if there are reviews. We would need to search for it using more specific information, like the title or the genre of the new novel.
There could be some early reviews among his die - hard fans or from some advanced readers. But without more information about the specific new novel, it's hard to find and confirm the existence of reviews. It's also possible that it hasn't caught the attention of many reviewers yet.
Since I don't know which new novel it is exactly, I'm not sure if there are reviews out there yet. It might be too early for reviews if it was just released.