Nokia SymbianNokia is upping the ante against rivals such as Apple and Google with its preview of the upcoming iteration of Symbian OS (V3) for touchscreen devices. The upgraded mobile operating system is expected sometime next year, together with a bunch of new devices.

The Finnish mobile phone manufacturer, the largest in the world by volume, has seen rumors of dropping Symbian in favor of Google's own Android operating system and even replacing the aging OS with its more up to date Maemo OS found on the Nokia N900 device.

But Nokia has reiterated its dedication for Symbian, which it bought in 2008 for a reported $410 million, in the latest technology preview this week. Nokia announced plans for a dual SIM phones in 2010 and also a Maemo 6 powered device. The highlight of Nokia's presentation though, was a preview of the upcoming iteration of Symbian OS, which by now has been widely criticised for its sluggishness and not being finger friendly.

Nokia SymbianThe first noticeable change in the Symbian version is the support for multiple home screens. Users of Symbian touchscreen devices have been craving this feature since the N900 (running on Maemo) was launched, but the wait will be over soon. The small circle indicators at the bottom let you know which screen you are on. The circles function similarly to the iPhone home screens, but the widget interface is similar to Google Android's.

Nokia SymbianSymbian's video player is getting a facelift as well, with support for semitransparent graphic layers, as seen before on the iPhone. The next version of Symbian will also support HDMI output and can play files larger than 2GB in size.

Signal and battery indicators in the next Symbian OS version have been moved together to the left, while a "back" button appears on the right. Semi-transparent layered graphics are used in the photo browser as well, while the photo gallery works in portrait mode also.

Nokia SymbianIt needs to be mentioned that these images are concept mockups of the next Symbian update, and it is possible that the final product might differ slightly. Such an example would be Symbian's support for widgets of any size, in various screen orientation layouts. This function might appear only in a subsequent release of the OS.