Adobe added a new* library feature across all of Creative Cloud. It’s easy to use and I think it will become a really integral part of design workflow in the Adobe world.
At first, the library appears to be just another palette in the vast forest of palettes. But it's easy to add images, color palettes, style sheets and more to the new library via drag and drop or by clicking the icons at the bottom of the palette.
Library assets are then accessible from most Adobe desktop and mobile apps.** Drag a logo into your library in Illustrator... place it in InDesign or Photoshop.
It's also an integral part of Adobe's vision for how mobile devices fit into the design environment – an easy way to share assets between different types of devices. For example, Adobe Comp CC, a mobile layout app, uses your library to pull appropriate graphics, stylesheets and color palettes, on your phone or tablet. Even if those graphics were created in InDesign or Illustrator.
Try it out. You might find that it's a useful feature to have if you have a client library that you need to share between apps or designers.
* I remember a similar feature in Quark Xpress years ago. But the benefit of the new library is how you can access it from any Adobe app.
** It looks like other, non-Adobe apps can access the library, too. But I don't think anyone supports it yet.