Facing very tough competition from iOS, Android and Windows Phone 7 based smartphone's, Nokia has now came-up with three new models of cellphones and a brand new "SMART" mobile-os named "Symbian Belle".

The new jazzed-up mobile OS platform "Symbian Belle" features NFC sharing, pairing functionality to the table, a total of six home screens, live widgets supporting five different sizes, dynamic lock screen, and a pull-down task-bar cum notification menu.

Nokia also announced three new devices Nokia 700, 701 and 600 which will come pre-loaded with "Symbian belle" OS and top-of-the-class hardware specs - images and video of new mobile-os and phone models after the jump.

Apple has posted live the latest BETA version download links for it's upcoming iOS 5 mobile operating-system to developers, IPSW download links for the latest dev-release iOS 5 Beta 6 is meant only for Apple iOS Developers and is restricted to registered Apple developer's only via Apple Developer Site. Apart from the usual bug-fixes The latest beta makes video content in applications and websites automatically AirPlay enabled.

To complement the iOS 5 Beta 6 release by Apple, iH8sn0w released Sn0wbreeze 2.8 allowing jailbreaking on previous Apple iOS 5 Beta 5 release.

Apple iPhone 5 would be the most eagerly awaited gadget of this year, with an expected announcement and public availability in September/October this year here is an complete rumor roundup (images and video) of the yet to be announced device.

Mozilla the team behind popular web-browser project Firefox is all set to dive into mobile niche, the non-profit organization Mozilla Foundation has taken a step forward to develop an all new Boot 2 Gecko(B2G) mobile-OS project to empower mobile computing platforms.

To make things easier and more compatible with hardware stacks, Mozilla will be taking some of Android's code and will add a new UI and application stack pulled from Firefox's cross-platform layout engine Gecko. Mozilla has also said this would not be just another custom-ui over android and they won't be adopting the Java language used in Android and will also not support native code programming.

A video demonstration of Mozilla Seabird the first concept phone is out now and available after the jump. With some very impressive hardware specs like an 8MP camera, two pico-projectors, inductive wireless charging, IR+haptic feedback based bluetooth headset, mini-usb and an innovative and powerful software back-end this concept is something to definitely look out for.