New iPhone 5 with taller screen unveiled at Apple event, in stores Sept. 21

Here are some details on its availability.

COLORS: Black or white.

MODELS AND PRICES: 16 gigabytes of storage, $199; 32 GB, $299; 64 GB, $399. These prices assume a two-year service agreement.

At each price level, there will be three different models. The differences between them lie in their ability to connect to different "4G LTE" networks around the world. For instance, one model will connect to AT&T's U.S. network and Bell's Canadian one, while another will connect to Sprint's and Verizon's U.S. networks and KDDI's network in Japan.

OLDER PHONES: With a two-year contract, the iPhone 4S will now sell for $99 and iPhone 4 will be free.

DATES: Advance orders begin Friday. The iPhone 5 will be available a week later, on Sept. 21, in the U.S., Australia, Canada, France, Germany, Hong Kong, Japan, Singapore and the U.K.

On Sept. 28, the iPhone 5 will be available in 22 more countries: Austria, Belgium, Czech Republic, Denmark, Estonia, Finland, Hungary, Ireland, Italy, Liechtenstein, Lithuania, Luxembourg, Netherlands, New Zealand, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden and Switzerland.