BlackBerry Bold new models unveiled

Shares of Research In Motion Ltd. (TSX:RIM) were down slightly after the company announced two BlackBerry Bold smartphone models and an upgrade to its operating system.

The Waterloo, Ont.-based company's shares fell 19 cents to $45.90 on the Toronto Stock Exchange shortly after markets opened.

The shift came after RIM debuted the BlackBerry Bold 9900 and 9930 models which come with both a physical keyboard and a touch screen.

The new models will run on the BlackBerry OS 7, which includes an improved Web browser and better graphics.

RIM also unveiled numerous software developments, including a video chat and a Facebook app for its PlayBook tablet device.

The announcements were made before the company kicked off its BlackBerry World conference, which runs May 3-5,in Orlando,Florida.