Atebits who make Twitter client Tweetie for the iPhone has now let the lid off of what features can be expected in their highly anticipated Twitter client update Tweetie 2.0 reports an article over on the iphone blog.

So those Tweetie 2.0 features are…full persistence, full offline mode, iPhone 3.x only, send drafts to birdhouse, drafts manager, threaded conversations, link Twitter contacts in Address Book, geo-tagging, @people picker, nearby integrated with imbedded maps, save searches to sybc with Tweetie Mac and Twitter.com.

And there’s more…multiple attachments manager, peek gesture for replies, recent hashtags, profile editing, landscape support, imbedded email, new style re-tweet support, improved gesture shortcuts, TextExpander support, refresh all on launch, Go-to-User, searches auto-complete, in reply TwitLonger, read it Longer and Instapaper integration. Tweet translation, block/.follow multiple accounts, short URL preview, and reply chain list view.

Tweetie 2.0 for iPhone is to be offered as a new application carrying a price tag of $2.99 and has been submitted to the App Store and is awaiting approval.