A couple of days ago, I checked if there were any updates for the applications I have installed on my iPhone, and one that was identified as having published a more recent version in the App Store was TweetDeck, the popular Twitter client for desktop and mobile. Strangely, the update failed and I just gave up trying to install the upgraded version after a while.Now it seems the TweetDeck iPhone app is MIA from Apple's App Store completely, barring new users from installing the app on their phones and existing ones to upgrade to a new version.