Where is the product going to? When will this feature be available?
The product roadmap is usually represented by a table to present the release schedule for a product showing the date when specific features will be available.
A product roadmap serves many purposes:
The existence of a roadmap allows the project owner to keep the product backlog trimmed and fit, with only the stories that will be addressed in the next 2 or 3 sprints.
Project managers can use a roadmap to manage users expectations by showing when they will have the features they want. The sooner people are informed of the release plan, the easier it is to convince them using rational arguments. Later in the process people may get frustrated and so emotional that any dialog may become really difficult. Some managers even talk about the importance of keeping credibility to maintain trust.