DropboxのiPhone用インターフェースは9月に公開されていた

即ち、iPhone / iPod touchがドキュメントビューワになるということだ。

Sometimes you need your files on the run, and we were amazed that no one had made it easy. So we developed an iPhone-optimized interface that lets you get to your Dropbox from anywhere, including special support for photo galleries. (It works great on other mobile browsers, too.)

The Dropbox Blog

このとおりUIもクールだ。