Twitter rolled out a new version of its iOS and Android app, search feature gets improvements including additional topic and user suggestions when searching.

Twitter has removed video uploading support for Mobypicture, Posterous, and Vodpod. This will make TwitVid and YFrog the exclusive video uploading services via Twitter’s iOS app.

“We recently introduced the ability to see older Tweets in search results. Now when you search for important Twitter moments, you may see a Top Tweet separate from the rest of the results. This Tweet is the best match for your query based on relevance and engagement. To see additional Tweets from this time period, tap on “View more from this time.” Try searching for “four more years” or “deep challenge” on your phone to see an example.

We’re also introducing a couple features specifically on Twitter for iPhone and Twitter for iPad.

Tweets and web browsing: When you open a link from a Tweet in your timeline, you’ll see that Tweet displayed at the bottom of the app’s built-in web browser. This provides additional context to the page you’re viewing, and makes it easy for you to retweet, favorite or reply to the Tweet as you’re reading an article or watching a video. If you don’t want to see the Tweet, simply tap the page and the Tweet will slide away from view. By pulling up or down on the tray icon, the Tweet will appear or disappear from view.

Autocomplete: We’ve improved autocomplete suggestions so that when you search on Twitter or you’re composing a Tweet, you’ll see more hashtag, topic and username suggestions as you type. Additionally, autocomplete suggestions for topic searches will be updated more frequently and feel real-time.”