Magento 2.0 stable is now available for download.

Magento 2.0 represents a more streamlined and effective coding structure with major improvements over Magento 1.X.

Key improvements arias in the new Magento 2.X series

– Simpler and more streamlined file structure which makes theming and styling more logical.
– Modern responsive structure with HTML5, CSS3, RequireJS, Jquery, CSS Pre-processor included by default.
– Fast performance and high scalability with improved indexer and built in full page cache.
– Improved easy to use admin interface.
– Improved and optimized checkout.
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Resources:
– Magento 2 Download
– Magento 2 and Composer Install Instructions