The customer wants to add a major feature a day before the release. Reaction?

In a situation where the client wants to add a major feature a day before the release, it is important to:

• Assess the impact of the change on timelines and quality. A large feature can disrupt stability and lead to bugs.
• Discuss risks and possible compromises with the team and the client.
• Offer alternatives: delay the feature to the next release or develop a minimal viable product (MVP).
• Document the decision and update the release plan.

The main goal is not to take risks for speed, but to ensure the quality and stability of the product.