Twitter CEO Dick Costolo went on NBC's Today Tuesday morning to announce a new look for profile pages on the social network and a new iPad app plus updated iPhone and Android apps.

"We rebuilt Twitter for iPad from the ground up to make it fast, beautiful and easy to use," Costolo said.

Today's website explains:

What's the biggest change? There's now a huge header image that runs across the top, sort of like the banner image that Facebook users have on their timelines. The page itself has been reoriented to play up other visuals as well: Your avatar is no longer tucked in the corner, but will display front and center. The photo stream, too, has been moved up, and will now be accessible on the apps.

In a release from Twitter, the company said the upgrade represents "our mobile-first strategy." The company says that if you upload an all-new header photo on Twitter's mobile apps or on twitter.com, "the same image will appear whenever anyone views your profile on these apps or the web. These new profiles are available for everyone."

Twitter also updated its iPhone and Android apps to support new profiles and photo streams on profiles: "Swipe through the stream to see the photos that other users have shared, or tap any thumbnail to view their photos in fullscreen."

SEE ALSO: How to Change Your Twitter Header Image

The announcement also includes a new iPad app: "We’ve rebuilt the app from the ground up to make it fast, beautiful and easy to use. Tweets come alive with in-line expansion and support for photos, videos and web site summaries. Like Twitter for iPhone and Twitter for Android, this new version of Twitter for iPad also supports new profiles and photo streams on profiles. "