Cooling is the biggest factor in how cases look and are designed Nvidia's 15nm and AMD's 14nm chips mean the cards are more energy efficient and so smaller heat sinks. If Intel release their 10nm next year we can expect to see backpack pc's for on-the-go VR experiences.
The new generation card already mean new generation laptops will have full desktop graphics cards and not some tweaked down version to extend battery life or reduce overheating.
Microsoft Hololens is a fully functioning stand alone unit as is.
We going to see more powerful devices popping up every where.