NASA has decided to cancel the upgrade plans for the Space Launch System (SLS) rocket and will shift its strategic focus to increasing the rocket's launch frequency.

This major adjustment directly affects Boeing's $2 billion Exploration Upper Stage (EUS) contract. NASA stated that this move aims to optimize resource allocation and prioritize the launch cadence of key missions such as the Artemis lunar program. The original upgrade plan included developing a more powerful upper stage to increase payload capacity, but this has now been replaced by the more urgent goal of increasing flight frequency. Industry observers point out that this decision could have a significant impact on Boeing's aerospace business segment. As the primary contractor for the SLS rocket core stage, this contract adjustment may trigger a restructuring of subsequent commercial negotiations.