Twitter for iPhone has just received a significant update. It’s not an entirely new major version number (it’s only 4.1), but it does add one of the most important features that they previously removed: Quick Swipe.

In case you aren’t familiar with Quick Swipe, it gave you selectable actions to do with a tweet after you swiped on it. This feature was first featured in Tweetie, long before Twitter bought and rebranded it. With this back in action again, users can reply to, retweet, favorite or share, or even view the user’s Twitter profile – all without leaving their timeline.

The iPhone app also got some other old features back, such as copy and paste text from tweets and user profiles, link options (tweet, copy, or mail the link, or even save it to read later with the Instapaper or Read It Later services).

Another interesting part of the update is the new version of “Find Friends.” After it was revealed that Twitter also harvested user’s phone contacts without disclosure, the new Find Friends will prompt you with a confirmation alert. This will inform users that they will be uploading contacts’ email addresses and phone number information in order to find which friends are actually on Twitter (if they chose to be discoverable that way, of course).

The full change log for Twitter for iPhone 4.1 (please note that these changes are iPhone only):

- Swipe shortcut

- Copy and paste for tweets and profiles

- Press and hold actions on links in tweet details

- Font size settings

- Direct Message improvements

- Confirmation alert for Find Friends

- Improved startup time and general performance improvement

- Improved image quality in tweet detail

- Accessibility improvements

- Profile shows whether a user follows you

- Verified badges in people search results

- New language: Turkish

- Lots of other polish and bug fixes

Are you glad that the super-duper useful Quick Swipe is back? We sure are! It’s the least that Twitter can do after all the damage they’ve caused in the past.