I wanted to get a refresher course on new ways to look at web design, as I move away from Actionscript to full Javascript implementations, and it is a great primer to using all the CSS tags to their full effect, as well, as grasping with how to develop for a wide range of devices.
We are moving away from designing to just a desktop, or the largest size we can get away with, but adding dynamic function, starting from the most popular small screen and mobile devices, and then enhancing that experience to discover new inputs and pixel real-estate. Content, page size, layout and even behavior radically change to provide an experience that transfer across platforms.
Now nothing is set in stone, and never will be; what is being offered are strategies to consider in each stage of development, but it does provide doorways to using HTML and web interfaces as the new standard to create a systems-wide experiences.
Just a note: it's a little light on the programming, but it does raise the pitfalls that can happen, so reading more in-depth on Javascript techniques to achieve these concepts are in order.