More evidence that iPhone OS 4.0 is going to rock!

If you haven’t gone ahead and jailbroken your iPhone already, you’re no doubt as excited as us at the prospect of iPhone OS 4.0. So many of the features we’ve long been craving to have on our phones will be at our fingertips, hopefully some time this June.

Whether you’re looking to prevent the RSI-inducing homescreen swiping that occurs when you install more than 50 or so apps or you simply want to change your background image, iPhone OS 4.0 will have the answer.

Music fans will love the ability to run apps like Pandora in the background while browsing the web or checking emails, and non-iPad owners will relish getting hold of their first iBooks for iPhone.

But we know all of the cool new features in the next OS already, don’t we? Apparently not. Sources who have their hands on the latest developer builds of the next iPhone operating system are providing snippets of information on some more great tweaks that weren’t even mentioned during Apple’s “Sneak Peak” back in early April.

New Settings/Controls
In iPhone OS 4.0 a swipe to the left of the first homescreen (which takes you to Spotlight in OS 3.0) brings up a new interface with some new buttons. iPod controls, much like those you see when double clicking the home button in OS 3.0, sit in the center with a quick iPod app launcher button to their right. On the left is the best new feature yet and previously only a plaything of the iPad owner – orientation lock. At last, browsing the web in bed is no longer something you have to do sitting up or lying at an angle only familiar to contortionists. 9to5Mac, who posted images of these new features, suggest that this could be part of a wider plan to introduce “mini-widgets” in the final build of iPhone OS 4.0

File Sharing and more
Meanwhile, over at The Boy Genius Report, even more cool tidbits are surfacing. First is the ability to drag manually add files to your iPhone via iTunes. Simply plug in your phone and access the File Sharing section under the Apps tab in iTunes to drag files to and from your computer and on to your device. Closing running applications (as part of the multitasking feature) has become easier too. In much the same way you currently delete apps from your iPhone, simply holding on an open app’s icon will produce small close buttons for you to click on and shut down the app.

This is about as much that’s out there at the moment but remember, Steve Jobs promised over 100 new user features when showing off OS 4.0, so expect many more neat tricks and enhancements in the coming weeks.

[ via 9to5Mac ]
[ via Boy Genius Report ]