Adobe Generator is real-time asset generation within Photoshop CC and it looks potentially really cool. Automatically creates image assets (including simultaneous 1x and 2x files) while you work based on layer naming conventions.
∞Finally: Linked Smart Objects in Photoshop
A new update bring us linked smart objects in Photoshop CC! Finally!!
Put the same smart object in multiple files, change it once and you’ll see the change everywhere it is used. Sorta. Watch the video: