Microsoft is also offering Windows 10 RTM OEM Final Version to the general public and corporate organizations worldwide at zero or no cost. Windows 10 users can buy any standalone edition which they think is suitable and relevant in terms of features, functions, and options for personal and professional usage. There are sixteen Windows 10 Editions available for consumers and users to choose from including four 'N' editions. The latest Windows 10 version currently available for instant update, upgrade and installation is Windows 10, Version 21H1, Build 3 (also called Windows 10 21H1, Windows Update, Windows 10 19043). Windows 10 is the newest available Windows operating system from Microsoft, and currently its powering many Windows-based computers and laptops.