Quantum computing roadmap
This Quantum Information Science and Technology Roadmapping Project is a very detailed roadmap prepared under ARDA (Advanced Research and Development Activity) around ~2004 with further refinements. Here is the introduction/overview. It had a panel of about 19 elite academic scientists/experts.

For a completely contrasting recent overview/review on progress to date/future prospects see this [controversial] paper State of the Art and Prospects for Quantum Computing, M. I. Dyakonov (2012).