As we all know the use of tablet devices, and mobile devices, where the primary interaction is touch, has been increasing exponentially over the last few years. As a result, designers have been designing for the these devices differently to how they have been designing for the desktop, but treating these form factors quite differently.
However, with the rise of desktop devices that are designed for touch interaction, the line between designing for different devices is converging.
Designers will need to increasingly consider how a user will interact with a desktop device not just with a mouse but with their finger when they so choose. Resulting in bigger hit areas, and bigger text.
Microsoft Windows 8 works great on a big screen, but more consideration needs to be made to what happens when someone is viewing the same content on a 15 or 13 inch laptop.