It would be really useful to our team working on designs and wires in Adobe XD to take advantage of Creative Cloud Library for asset sharing and asset updating. We find this feature extremely helpful in photoshop and illustrator, would love to move our design process into XD once this is implemented – it would save us even more time!
Yes, it's on our roadmap! You can read more about our long range roadmap here: http://blogs.adobe.com/creativecloud/introducing-adobe-experience-design-cc-preview/
However, you can also upvote on the idea and add your thoughts about what would be the most useful here: Creative Cloud Library Support – Adobe XD Feedback : Feature Requests & Bugs If you sign up, you'll also have an opportunity to be updated via Email when it's ready.