With the upgrade to version 1.3, Tweedeck (free, available here) for iPhone gains a number of new features. These enhancements include support for Twitter's new geotagging API, which automatically tags tweets with a user's current location, and Twitter lists, by allowing folks to add columns for their lists right on their on their smartphones. Users can also now retweet just like on the desktop. There are also a lot of fixes and tweaks under the hood of Tweetdeck, according to the developer, including a fix for the issue that was affecting a lot of users when trying to add their Facebook account. See video below for more on Tweetdeck 1.3:
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