Lines started forming in at least Japan and Australia as Apple (NSDQ: AAPL) kicked off its second worldwide release of the iPhone 3G S today, Bloomberg reports. The phone also went on sale in Austria, Belgium, Ireland and the Netherlands, and is now on sale in 14 countries—eight others debuted on June 19, along with the U.S.

Over the first weekend, Apple sold 1 million devices, but there’s some uncertainty about how well it will sell this time internationally. Sales of the previous model in Japan reached about 700,000, according to Makio Inui, a Tokyo-based analyst at UBS AG, and another analyst estimates as many as 1 million iPhone 3Gs were sold in the country. Both analysts expect sales of the new model to do more poorly this time around.

Still, the line in front of Softbank’s flagship store, stretched 1,300 buyers long, who had been camping out in front for three days. Softbank President Masayoshi Son wouldn’t give a sales target for the model, but said advance reservations for the iPhone 3G S exceeded the company’s expectations.