NEW YORK – It was a big week for gadget announcements as Amazon, Nokia and Motorola all tried to generate interest in their products before Apple’s expected announcement of a new iPhone next Wednesday.

Amazon announced four new Kindle Fire models and a new line of stand-alone e-readers Thursday, a day after Nokia and Motorola unveiled five new smartphones between them.

Makers of consumer electronics are refreshing their products for the holiday shopping season. Apple’s rivals are hoping that a head start on the buzz will translate into stronger sales.

Nokia and Microsoft, in particular, are trying to generate interest in a new Windows operating system out next month.