In the custom roadmaps by default you can view the release dates as a tool tip. It would be nice to show custom tool tips/annotations either in addition to the release dates or as a separate annotation allowing the user to view multiple tool tips.
Note - I have been asked several times about this feature on my project.
Thank you for your idea. This is currently possible by sharing the roadmap using an Aha! presentation.
Thanks. I will look into this within the presentation details. However the ask is within the roadmap itself - to display custom tool tips.