iPhone OS 4 Beta 2 was pushed to developers yesterday and it mainly brought API improvements, increased performance and bug fixes. Apart from this, Apple has also added a new faster and smoother animation for switching between apps during multitasking. This carousel transition rotates apps in a wheel-like form. Video after the jump.

Apple has just released the Beta 2 version of iPhone OS 4 for developers, along with an updated version of SDK for iPhone and iPod touch. Only members enrolled in the iPhone Developer Standard or Enterprise Program can access these bits of iPhone OS 4 and SDK by signing into Apple Developer Connection.

The iPhone hacker behind sn0wbreeze, f0recast and BlackBreeze today has posted a tweet via his twitter account in which he has confirmed to have grabbed the decryption keys for iPhone OS 4.0. While the OS hasn’t been jailbroken yet, but according to iH8sn0w, it is very much possible.

In case you missed all the action which happened earlier today, here is a complete video from the iPhone OS 4 event which also includes Steve Jobs keynote. The said video is available in QuickTime and MPEG-4 format and can be seen from the link given below.

Apple has just released the first developers preview version of iPhone OS 4 Beta, along with SDK for iPhone and iPod touch. Only members enrolled in the iPhone Developer Standard or Enterprise Program can access these bits of iPhone OS 4 and SDK by signing into Apple Developer Connection.

Apple today has unveiled the new iPhone OS 4 firmware in a preview event, held at their 1-Infinite loop campus in Cupertino. This announcement added lots of new features for both users and developers. Here is a sneak peak at what the new version of OS is going to offer.

Apple is all set to unveil iPhone OS 4.0 tomorrow, at an event which will be held at their One Infinite Loop Campus in Cupertino. There has been lots of talk lately about all the different features that might become a part of this major OS release. Here is a compilation of what to expect from iPhone OS 4.0.

Jailbreaking the iPhone has always been crucial, giving you access to a whole set of features, allowing you to install tons of useful apps which otherwise wouldn’t have been possible, and most importantly, it also allows you to unlock your phone so that you can use it with any carrier. Apple of course patches all these loopholes in every new version of its OS which makes jailbreaking harder. But sooner or later, hackers have always managed to find new exploits which jailbreaks the iPhone on the latest firmware.

After the successful launch of iPad, Apple is now ready to reveal its new major release of iPhone OS for iPhone/iPod touch and iPad. iPhone 4.0 is said to be a major milestone for Apple and so it is expected to add major features like multitasking, among many others to take on the ever growing competition from the likes of Android and Windows Phone 7.

We all knew that iPhone OS 4.0 firmware was going to be unveiled this year, but not as soon as this. Well folks, it is now official and confirmed, they are going to announce it on April 8th, right after the big bang launch of the iPad.

John Gruber of Daring Fireball has added his thoughts on the “Verizon iPhone” report which was published by WSJ earlier today. According to him, the next-generation iPhone will feature an iPad like 940 x 640 resolution display, an A4 CPU chip (again like iPad) and a front facing camera for video conferencing. He also confirmed multitasking in the upcoming iPhone OS 4.0. This is what he had to say about Wall Street Journal’s report.

The Loop is reporting that it is possible the iPhone and iPad firmware will not unify until fall of this year. iPad will be released with OS 3.2, but the folks over at The Loop are suggesting the iPhone OS will not be updated until the summer, with the release of new hardware.