Last week, Twitter released an app update (3.3) for the iPhone and iPad. Changes included reworks on the toolbar which now includes a camera button with improved image preview for posting pictures, discovering 'friends' on Twitter based on the contacts in your phone, automatic link shortening (yet no automatic tweet shortening), auto complete for user names and hash tags and Direct Messaging with conversation view.
New Twitter for iPhone: Camera addition on the left and Quick Bar on the right
The biggest change though was the addition of the 'Quick Bar', and this addition was iPhone specific. It was designed to let you see trends at the top of the timeline and you could swipe left or right to see additional trends. However, users got very annoyed with this hovering bar which intrusively hid tweets and many griped on Twitter that because of the Quick Bar, they were more likely to switch to another app for their mobile devices.
Twitter took notice and released update 3.3.1 in which they updated Quick Bar's default behaviour to not hide tweets in the timeline. The idea is, users can see both trends and tweets in the same window without interruption.