Both Qualcomm and ST-Ericsson are demonstrating at Mobile World Congress concept smartphones that can connect to and play HD content on TVs.

Symbian has completed the process of open sourcing its entire code base, in advance of its June deadline.

Symbian Foundation, responsible for development of the Symbian mobile OS, is readying its Symbian^3 and Symbian^4 versions of the platform, with version 3 likely to be feature-complete next month, a Symbian blogger said this week.

Nokia 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 Symbian Foundation plans to launch a publishing platform later this year aimed at helping developers to get their programs into mobile application stores.

The Symbian Foundation expects to begin beta testing of a new version of its mobile phone operating system within the next few weeks. Symbian, the first version of the software since the foundation said it planned to go open source, should be ready for release six months after that, so smartphone buyers may see the first devices using the software in the first half of next year.

Unlike the iPhone and products based on Google's Android OS, Symbian's user interface hasn't been developed for smartphones with touchscreens. But that is about to change, said Lee Williams, executive director at the Symbian Foundation, who along with his colleagues gathered at the Symbian Exchange & Exposition on Tuesday and Wednesday.