The 2014 release of Photoshop CC introduced the package facility for objects that contain any linked smart objects, as well as supporting access to any Layer Comps inside the smart object. This feature will offer great flexibility and time saving when it comes to re-using content across your PSD file, as well as an efficient way of packaging up these into a folder structure, ready for distribution. This release also introduced the ability to have Fonts from Typekit follow the document around with anyone that is on the Creative Cloud (30 Day trials also have access to this feature).
Distribution of assets can be achieved with many different technologies, but the Creative Cloud now offers private folder sharing to fully managed and utilise your creative assets, with a way to roll back and forward changes in a 10 day rolling window.
I have put this video together to you you all of these features and walk you through how it all works.