NVIDIA today introduced a new platform at the MWC 2009, based on the NVIDIA Tegra 600 Series computer-on-a-chip that enables a $99, always-on, always-connected HD mobile internet device (MID) that can go days between battery charges.
NVIDIA says that this platform will enable OEMs to quickly build and bring to market devices that carriers can offer for as low as $99 —bringing broadband connectivity and all of the Web’s HD content to the masses.
The NVIDIA Tegra MID delivers:
* 720p and 1080p video playback
* Days of use between charges
* Full Wi-Fi and 3G connectivity
* Optimized hardware support for Web 2.0 applications for a true desktop-class internet experience
* A complete software solution including Microsoft Windows Embedded CE OS, application viewers, full Internet browser, UI framework, board support package (BSP), software development kit (SDK), Web mail client, and more

In addition, NVIDIA partnered with ST-Ericsson to add 3G communication capability into this new platform, allowing for seamless connectivity, worldwide.

NVIDIA promises a lot these days with ION based mini-notebooks to be selling for $299. I will believe it when I've got a $99 MID in my hands and it is actually doing what NVIDIA is promising above.
Via this NVIDIA announcement.

The Mobile World Congress 2009 (MWC 2009) is starting on February 16th and lasts until the 19th. The MWC 2009 (former 3GSM) takes place again in Barcelona. See our MWC 2009 Preview to get an idea what new mobile phones will be unveiled at the MWC 2009. More MWC 2009 News can be found in our Mobile Phone section.