Twitter has just announced the update of its web app for mobile devices with in Official blog post,  Twitter said they are slowly rolling out the new web app interfernce for mobile devices to users, this time they rolled out the new design just for iPhone users with HTML-5 integration and more new features.

We want you to be able to access Twitter no matter where you are; regardless of what device you use; or, whether you prefer to access Twitter through a mobile application or the browser. Today, we’re starting to roll out a new version of twitter.com for mobile devices. This web app allows us to provide a high-quality and consistent Twitter experience on high-end touchscreen devices – whether or not an official Twitter application is available. It was built from the ground up for smartphones and tablets, which have more advanced browsers that support the latest web technologies, including HTML5.

The new web app design allows scroll the timeline without leaving Mobile Safari even allows you to quickly switch between tabs, check out your profile and even direct messages. This time this web app interfernce is only out for some users who are accessing Twitter on their iPhone, iPod Touch and android users. but according to the official announcement the new interfernce will roll out soon to all users.