Knut Mork developed a new letter template for the navikt/pensjonsbrev repository, focusing on communicating upcoming income-based changes to Uføretrygd, including child and survivor supplements. He implemented detailed logic in Kotlin and Java to calculate and present these changes for the next year, ensuring that notices are accurate and compliant. The work involved updating API models and refining the template engine to support the new requirements, as well as fixing test fixtures to guarantee reliable rendering and end-to-end validation. This update improved the clarity and correctness of user communications, reducing the risk of errors in official notifications for end-users.