Amazon.com has announced that more new generation Kindles were ordered in the first four weeks of availability than in a similar timeframe following any other Kindle launch. While the company didn’t share any specific numbers, they say this makes the new Kindles the fastest-selling ever.

“Kindle is the best-selling product on Amazon.com for two years running and our new generation Kindles are continuing that momentum,” said Steven Kessel, senior vice president, Amazon Kindle. “Readers are excited about all that the new Kindle has to offer 50 percent better contrast, 20 percent faster page turns, 15 percent lighter, up to one month of battery life and a new price of only $139.”

The new Kindle is lighter, smaller and faster and costs $139 for the Wi-Fi only, $189 with 3G wireless built in.