In software, it is very difficult to say when a final product can be released. However, it's very easy to look at the backlog of work remaining and estimate the number of weeks it could take to complete this work. Looking at this, you can say with absolute certainty that the product will not be released before that time has passed.
This planning information is never made public, but it would be revealing to know how many weeks are currently in the development team's backlog. 2? 6? 16? If we new that, we could say for sure that SoW will not be released or even out of validation before 4 months.
Somehow, that would be more gratifying to know than.... nothing!
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