Windows 10 is an upcoming operating system developed by Microsoft which will be released this summer. The goal of Windows 10 is to unify the Windows PC and/or laptop, Windows Phone, Windows Embedded and Xbox One product families, as well as new product categories such as the Surface Hub and HoloLens, around a common internal core. These products will share a common, "universal" application architecture and Windows Store ecosystem that expands upon the Windows Runtime platform introduced by Windows 8. Windows 10 provides further integration with Microsoft services and platforms, such as the addition of Cortana (an intelligent personal assistant), a notification system that can be synchronized between devices, and new Xbox Live features. Windows 10 will also introduce a new bundled web browser to replace Internet Explorer, called Spartan. During its first year of availability, upgrades to Windows 10 will legally be offered at no charge for licensed consumer users of Windows 7 and Windows 8.1.

Main features:

Start menu: The familiar Start menu is back, but it brings with it a new customizable space for your favorite apps and Live Tiles.
Everything runs in a window: Apps from the Windows Store now open in the same format that desktop apps do and can be resized and moved around, and have title bars at the top allowing for maximize, minimize, and close with a click.
Snap enhancements: You can now have four apps snapped on the same screen with a new quadrant layout. Windows will also show other apps and programs running for additional snapping and even make smart suggestions on filling available screen space with other open apps.
New task view button: There’s a new task-view button on the taskbar for quick switching between open files and quick access to any desktops you create.
Multiple desktops: Create desktops for different purposes and projects and switch between these desktops easily and pick up where you left off on each desktop.
Find files faster: File Explorer now displays your recent files and frequently visited folders making for finding files you’ve worked on is easier.

System Requirements

• Processor: 1 gigahertz (GHz) or higher
• RAM: 1 gigabyte (GB) (32-bit) and 2 GB (64-bit)
• Storage: 16 GB
• Video: Microsoft DirectX 9 compatible with WDDM support
• Microsoft account and Internet connection

We recommend at least 4GB Ram and SSD for storage

Source: microsoft.com | wikipedia.com