Apple has released an updated version of iOS 4 named as iOS 4.1 beta for iPhone 4, iPhone 3GS, iPhone 3G, iPod Touch 3G and iPod Touch 2G. The new version has several changes which are intended for developers to work with.
If you are an Apple Developer, you can download iOS 4.1 beta from the Apple developer site here to try out and build applications with. However, if you are an iPhone 4 user do not expect this to fix the Death Grip Antenna issue, we earlier reported that iOS 4.1 does not fix Antenna issues, so these issues are purely hardware related.
Also, if you have jailbroken iPhone, it is highly advisable to stay away from this update until the Dev team and others work on a new jailbreak for iOS 4.1. New features in iOS 4.1 are not very noticeable except for a change in the network signal bars.
iOS 4.1 also lays foundation for Game Center which has not yet launched. In addition to that, iOS 4.1 does not have support for the iPad yet, so it iPad users may have to be content with using iOS 3.2 for now. Are your hands itching? Go ahead and download iOS 4.1 from the Apple Developer site here then.