Twitter adding expanded summaries to embedded tweets

Twitter is updating the embeddable tweets feature to improve the speed, and to show more content.  Over the last few months users of the twitter.com website have been able to view pictures, post summaries, or videos, without leaving twitter.com, just by clicking on the Expand or View Photo or View Summary links in the tweet.  The update brings that ability to embedded tweets.

For an example

—Energy Department (@ENERGY) January 22, 2013

This raises the importance (a bit) of making sure ones website provides twitter card data, so that Twitter can do this magic trick of extended information.