Snapdragon 800s are supporting 4K display output? That's incredible! I can't wait to see how Android scales to screens supporting that resolution. We're already building very flexible, multi-device apps that respond with various resources for the different display sizes/densities. Adding one more to the mix will be interesting. I really think using the device as the computer and having multiple simultaneous displays is a major upcoming milestone in mobile. I know Samsung and Motorola think it is in sensors but while those are nice to help the application logic figure out what is going on around the device, they need really flexible display options in order to present the data to users in an engaging and actionable way. I really feel like tablets are where this will happen first.