What is Sta.sh?
Sta.sh is deviantART's new upload and publishing platform -- home to all of your images, writings, Flash/animations, and everything in between. Once you've uploaded something via Sta.sh, you'll be provided a special URL. This URL is known only to you and can be shared with others before officially publishing the work to your public deviantART gallery. But that's not all! While this version of Sta.sh is fully functioning, it will soon also allow the ability publish to other major platforms on the Web in addition to deviantART.
Please also see, FAQ #445: Can I upload anything to Sta.sh?