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…