Summary Box: New touch-screen BlackBerrys coming

NEW PHONES: Research In Motion Ltd. has unveiled five new BlackBerry phones with touch screens.

THE STRATEGY: RIM is trying to revive the BlackBerry’s dwindling appeal in the face of competition from the iPhone and Android smartphones.

DETAILS: The new phones had been expected earlier this year, but were delayed. RIM is updating its high-end Bold models to include touch screens. It’s also launching two Torch models with big screens but no physical keyboards, mimicking the basic design of the iPhone.