Magento 2.0 does away with all the shortcomings of its predecessor. Instead, a bunch of new feature additions make Magento 2.0 an excellent eCommerce platform that are bundled with several fetching features.
Integrated varnish caching, optimized code bases and reduced server loads help cut down response time and load pages at blazing speeds.
Numerous tweaks like auto-detection of credit/debit card companies, one page checkouts, minimal input fields all of which enable customers to checkout with minimal steps.
An improved admin interface which is far more user-friendly in the backend. The new file structure is also easy to modify at will without disturbing the overall code structure.
CSS preprocessing which cuts down memory consumption, Functional testing framework which enables real-time testing previews and better structure view are the new tool additions.
Magento 2.0 offers enterprise grade scalability by support multiple MySQL DBs, data clustering for quick retrieval and even separate database maintenance for checkouts, product data and orders.
Magento will be moderating directly the quality of extensions that will be made available for general availability. This will ensure availability of high quality extensions in the Magento community.
Will be posted after admin approval.