AEG has announced The Emergence of Shy Pluto, the first expansion for Space Base:
Welcome to the first installment of Space Base Saga Expansions. This expansion to Space Base is a collection of story-based scenarios that introduce new content to Space Base via a narrative structure. Not only are new ships added, but new scenarios are included as well. Once the story is completed, it may be replayed or the contents may be added to your Space Base core set.