The v3 stack will not contain a NOC component as we have it now. A centralized infrastructure that analyzes, stores and aggregates traffic just doesn’t scale.
Instead, for v3 we are spending a lot of time on designing and implementing the infrastructure and APIs for hooking into event streams of network clusters. These APIs would allow you to subscribe to (for example) gateway events, such as the gateway connecting/disconnecting to the server, sending uplink/status messages or receiving downlink messages. With sufficient rights you may even hook into gateway traffic directly to analyze it. These APIs allow developers to build their own stream/long-term analytics tools on top of TTN APIs. Those tools could then work with different public community clusters, but also with private clusters.