* Sega is constantly developing Sonic games: They have a history of releasing new Sonic titles, with both mainline entries and spin-offs.
* Sonic Frontiers is recent: Sonic Frontiers was released in November 2022. While it's possible they're working on something new, it's also possible they're focused on expanding Frontiers with DLC or other content.
* No official announcements: Sega hasn't officially announced a new Sonic game. However, this doesn't mean they're not in development.
To get the most accurate information, I recommend checking:
* Official Sega announcements: Keep an eye on their social media, website, and gaming news outlets for any official announcements.
* Rumors and leaks: While not always reliable, gaming news sites and forums often speculate on upcoming releases.
In short, it's highly likely that there will be a new Sonic game eventually, but we don't know when or what it might be yet!