Microsoft CEO Satya Nadella announced the transition from Windows 10 to Windows 11 during the third-quarter earnings call, highlighting that Windows 10's end-of-support date is October 14, 2025. Windows 11, launched in 2021, has seen a nearly 75% increase in commercial deployment since last year. Surveys show that Windows 10's user base dropped from 70% in April 2024 to 54%. The upgrade to Windows 11 is free for eligible hardware, but the system requirements are more demanding. Windows contributes only 9% to Microsoft's overall income in fiscal year 2024.