https://arstechnica.com/gadgets/2024/06/microsoft-reopens-beta-program-to-test-new-features-for-windows-10/

In October of 2025, Microsoft will stop supporting Windows 10 for the majority of PC users, which means no more technical support and (crucially) no more security updates unless you decide to pay for them. To encourage adoption, the vast majority of new Windows development is happening in Windows 11, which will get one of its biggest updates since release sometime this fall.