It is occasionally necessary to plan and propose releases without knowing the date on which they will start. In these cases I'd like to show the number of weeks each phase will take and what will run concurrently. Instead of showing the date (1 Oct, 8 Oct, etc), Aha! would show Week 1, Week 2, Week 3 and so on. If the release goes ahead, it could be converted to show dates.
Nice to have.
As described, the releases roadmap uses dates to help focus the teams around key deadlines for each of the different phases and features. A simple workaround would be to plan the release with expected or approximate dates and refine and share them once it is ready to go.
At this time, because of the current priorities and current usability, we are unlikely to make changes in this area. We hope you can understand.