Geeks hate this question. It's nearly impossible to answer. Our experience has shown us that no one can really know when a project will be done until it's done.
But non-geeks need to know. They have to plan for everything from revenue to hiring to marketing to production, and timing of the availability of the technology is a critical constraint.
Join the CIO Australia group on LinkedIn. The group is open to CIOs, IT Directors, COOs, CTOs and senior IT managers.