A twitter update today launched new twitter features like Group Direct Messages, Direct mobile capture and sharing.

You can start a private group conversation with up to 20 of your followers in form of group Direct Messages.

Users will now be able to use their mobile phones to record and share videos directly from the Twitter app. I believe this some sort of war against Instagram after the micro-blogging website asked it celebrities to stop sharing Instagram links and post photos directly to Twitter.
The recorded videos can be up to thirty seconds long and the app lets users edit the video within the app.
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An iOS update has been pushed and an android update is on its way.

Source: TNW