Final answer:
An increment should meet the Definition of Done every Sprint to maintain quality, minimize technical debt, and ensure the product is always release-ready.
Step-by-step explanation:
Yes, it is important to have an increment that meets the Definition of Done even if there is no plan to release at the end of the Sprint. The Definition of Done ensures that all work meets a certain quality standard and is potentially shippable. By adhering to this standard, the product backlog is kept clean, technical debt is minimized, and the Sprint's work is kept to a manageable and shippable state. This practice reinforces good development habits and maintains a sustainable work pace for the team, ensuring the product remains release-ready at all times irrespective of the actual release plan.