News Summary: Amazon unveils new Kindle Fires

FIRED UP: Amazon unveiled four new Kindle Fire tablet computers on Thursday, including ones with larger, high-definition color screens. The online retailer is stepping up competition with Apple ahead of the holiday shopping season.

THE PRICE IS RIGHT? The basic, 7-inch Fire model will cost $159, down from $199 for the original model, which sold out last month. Larger versions will go for $199 to $499 depending on various features.

SIMPLY READING: Amazon also refreshed its line of stand-alone e-readers with Paperwhite, with a light source that the company says makes for better reading in direct sunlight. It costs $119 or $179 with a 3G cellular connection.