Future networks will increasingly become heterogeneous and networks will be much more highly tuned to achieve much better performance than current architectures (e.g. increase of 1000 times in data rate even under extreme conditions such as high mobility). These networks will have multiple modalities (wired, wireless, satellite) with disparate channel properties, user rates that range from low to ultra-high (Tbps+) and a wide range of service requirements. Many new network problems that arise in future networks may not be served well by the 50 year old Internet architecture even with constant evolutions. Increasingly the link layers are very dynamic in their adaptation to rapidly changing environments including both channel properties, achievable rates and offered traffic. When the networks go through a disruptive jump in rates and service quality in the future, they must be built with new innovations in network architectures to drive cost down to affordable levels. Linear extensions of old Internet packet switching architectures and techniques no longer will be the concept that can fully serve future applications. We will convene a roundtable discussion to explore the properties of emerging applications and identify new architecture techniques and constructs.