Zurb, the product design company has announces the launch of version 4 of Foundation, their responsive design framework. Foundation 4 has been completely rewritten from a mobile-first perspective empowering designers to reverse their thinking and allowing them to design for the mobile experience before they design for the desktop. The Foundation design team has decided to move away from jQuery and instead now applies the smaller and lighter Zepto.js library ensuring that pages load more quickly and efficiently. Developer will also see changes to how they use the framework with the code now focused very specifically on the layout of the page. Read more on this topic here.