During the Platforms State of the Union at WWDC, Apple just announced that macOS 26 Tahoe will be the last release of macOS that supports Intel. That means from next year, major new versions of Apple’s desktop operating system will only run on Apple Silicon Macs (that is, 2020 M1 models and newer).
Of course, Intel Macs will continue to get critical security updates for some time thereafter. But users should not expect to receive new features from macOS 27 onwards, which will be announced this time next year.