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Animated Tab Bar Selection Indicator
January 04, 2011 • Unspecified License
As seen in Twitter for iPhone (née Tweetie 2), select a tab from the tab bar, and a small triangular selection indicator slides into place above the tab.
Vertically swipe between pages of content
January 04, 2011 • Unspecified License
As seen in the Reeder iPhone app, pull to see the title of the next page of content. Pull far enough and the next page slides in to replace the current page.
Pull-to-Refresh TableView
January 04, 2011 • MIT License
As pioneered in Twitter for iPhone (née Tweetie 2), pull the table view down to expose a refresh control. Keep pulling and release, and the TableView will reload.