Hello I have seen competing thoughts about including release, sprint or version segments in an Agile User Story Maps.
To my knowledge you can create a User Story Map but then create a flat Product Backlog based on this. If new requirements are needed you can add to the User Story Map and also then the flat Product Backlog. This has the negative effect of having to manage 2 boards, but has the positive of being able to see a flat linear list and what is near the top should be most often pulled into the next Sprint.