The newest Beta version of TweetDeck for Android is out bringing in some much needed update to its features. The biggest would have to be compatibility for all versions of Android up to 1.6. Other updates include the ability to delete your tweets, tapping header to refresh column, a refined UI for Facebook and Google Buzz attachments, and an option to compose to multiple twitter accounts. For those that only use TweetDeck for Twitter, the update gives you the option to remove accounts you are not signed up for. Remember, in order to download the newest version, you can only get the apk file from the tweetdeck website.
Source: Droid Dog