Unity previews what prepares us Ubuntu 12.10

We're a few months a few months I say weeks Quantal release of Ubuntu 12.10 and Quetzal are becoming known as the most important developments to come together with this new version.
As the main feature and that everyone knows is Unity as the default desktop environment which is showing us a great revolution in their development at the moment and have included the views of files pre integrated into the Dash. They met some images via the web that explain its functionality.
The pre visualizations or "Unity previews" allow the user to right click on an application or file for a preview and more details on this.
For example, read a Wikipedia article without a browser, or know how many seeders and leechers have a torrent from the Dash. Here you can see an example of how you see a photo of the new pre Flickr with Unity displays without a browser:
Ubuntu 12.10 is taking shape, and find it quite interesting, do you what you think of the new pre views of Unity?