Sony’s shown new Sackboy skins at TGS today, including a Snake model and one for Sephiroth.
No date’s been given for the content, there’s no confirmation of whether or not it’s going to be available outside Japan and there’s no news on whether or not you’ll have to pay for it if it is.
There is, however, a movie after the break. Watch it.
Update: There more on this, including a few more images, on the US PS blog.