The Iconfactory has released an update to its popular iPad Twitter client. Twitterrific for iPad 1.1 adds support for picture and video uploading via yFrog, TwitPic, Posterous, Twitgoo, img.ly or a custom image upload service. The new version also now displays images from img.ly and Tweetphoto services in a popover window, uses OAuth for Twitter authentication and supports replying to all users. The update further provides a number of other minor improvements and bug fixes, including an increased number of API calls per hour, better parsing of URLs and links containing special characters, correct reporting of new tweets and better handling of multiple popover windows. Twitterrific for iPad is available from the App Store as a free, ad-supported application; a $5 in-app “Premium” upgrade is available to remove the ads and provide multiple account support.