While Amazon has launched their $139 Wi-fi only versions of the Kindle, they’ve revealed that the $189 version with 3G support has sold out. There’s no word as to when this version of the Kindle will go back in stock.

“We’re seeing very, very strong [Kindle] device growth and we’re seeing very, very strong content growth,” said Thomas Szkutak, chief financial officer of Amazon, during a conference call.

Source: PC World