Atebits has announced additional details of its upcoming Tweetie 2 iPhone app. The update is promised to be a complete overhaul, rather than a cosmetic revision with only a few small changes. The app will allow users to send and receive video tweets, while tweet streams can be live-filtered in a similar way to the Mail utility.

The developer has also added full persistence, enabling the app to remember exactly what the user was doing when the program was last closed. The UI stack is restored even after taking a phone call.

While offline, users can also perform functions such as favorite, follow, block, and add to Instapaper, among others. A drafts manager can be used to compose tweets while outside of cellular range or a Wi-Fi connection. Any of the new messages are automatically sent all at once when a connection is reestablished.

The app will allow Twitter users to be linked to Address Book contacts directly from the iPhone interface, with full back-up when the device is synced. Threaded conversations have been added, following in line with the desktop software. The app also integrates several location-based functions using MapKit and geotagging.

Tweetie 2 for the iPhone will be a whole new title on the App Store, although the price will remain at $3. The app is currently pending approval from Apple's review team. The desktop software will be available as a free upgrade.