Microsoft announced of adding a new new product category will be added to your WSUS server under the Microsoft StreamInsight family, entitled Microsoft StreamInsight 1.0. The Microsoft StreamInsight 1.0 category will allow all classifications of updates to be offered to the Microsoft StreamInsight 1.0 product (including 1.0 Refresh). You will see this new category when new updates are available for this product.
It'll include a variety of update types, e.g. service packs, optional updates, critical updates and security updates. Additionally, Microsoft StreamInsight updates will be available through Microsoft Update and Microsoft Update Catalog.
You should sync the Microsoft StreamInsight family if you have these products in your managed environment. For additional information about Microsoft StreamInsight.