Develop more web content more quickly. A streamlined user interface connected tools and new visual CSS editing tools let you code efficiently and intuitively. And now Dreamweaver CC lets you share work directly from within the application and helps you keep up with web standards by giving you access to new features as soon as theyre available. Your entire creative world together in one place.
CSS Designer: Intuitive visual editing tools help you generate clean web-standard code and quickly apply CSS properties like gradients and box shadows. See the effect in your design immediately. No more tedious tweaking. No more switching back to the code. What you see is what you get.

Fluid Grid Layout: Construct web designs and responsive layouts visually. The enhanced Fluid Grid Layout interface makes it a cinch to design projects that display on different screen sizes for desktop and devices.

Edge Web Fonts: Bring expressive text to the party. Use the vast and ever-growing Adobe Edge Web Fonts Library powered by Adobe Typekit. Add web fonts from within Dreamweaver and Edge tools. Add beautifully styled typography with more control while creating pages that load super quickly.

Modern platform support: Author projects using HTML CSS and javascript. Develop dynamic pages in PHP. Code more efficiently using the improved code hinting and syntax coloring.

jQuery UI widgets: Banish boring buttons and generic icons. Drag and drop jQuery UI widgets. Add accordions to display collapsible content panels. Update all the button states to customize your mobile apps and interfaces.

and much more ...

Whats New :
https://helpx.adobe.com/dreamweaver/using/whats-new.html