Original Link: http://www.theverge.com/2012/7/31/3207482/nexus-q-consumer-launch-delayed

Google:

When we announced Nexus Q at Google I/O, we gave away devices to attendees for an early preview. The industrial design and hardware were met with great enthusiasm. We also heard initial feedback from users that they want Nexus Q to do even more than it does today. In response, we have decided to postpone the consumer launch of Nexus Q while we work on making it even better.