According to a private account on X who has previously reported accurate information about compatibility, macOS 15 will support the same Mac models as macOS Sonoma.
macOS 15 Rumored to Support Same Macs as macOS Sonoma, With One Possible Exception
The MacRumors Show: macOS 15, iPadOS 18, and Apple's Other WWDC Updates
macOS 15 will include new UI elements and reorganized system settings
macOS 15 Rumored to Feature Revamped Calculator App
