I'm erasing my site and starting again. I see some great new prebuilt sites in the demo, but I don't see them in my demo importer. I believe my theme is up to date; it doesn't show any updates in the theme dashboard. Is there any way to access the demos other than through the demo importer? and/or a way to upload those assets specifically? 

I tried downloading new theme file and re-uploading, but still don't see the new demo themes.