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Starting today, you can discover more interactive experiences inside any Tweet on twitter.com and mobile.twitter.com. When you expand Tweets containing links to partner websites, you can now see content previews, view images, play videos and more.
You have probably expanded Tweets before to play videos from YouTube. Now, a diverse and growing group of new partners like the The Wall Street Journal, Breaking News, and TIME also deliver rich content inside Tweets containing a link to those websites.