AT&T’s anticipated high-speed LTE wireless network will launch in five US cities on September 18. The news was made public by AT&T CFO John Stephens during the Bank of America Merrill Lynch Media, Entertainment & Communications conference in Beverly Hills, California as first reported by Fierce Wireless.

AT&T’s first wave of LTE service will kick off in Atlanta, Chicago, Dallas, Houston and San Antonio on Sunday. The wireless provider launched two 4G LTE connectivity devices last month in anticipation of the network rollout, the USBConnect Momentum 4G and the Mobile Hotspot Elevate 4G.

The USBConnect Momentum 4G sells for $49.99 with a two-year service agreement or $249.99 with no commitment. The Mobile Hotspot Elevate 4G comes in at $69.99 with a two-year contract or $269.99 without ties.

The $50 monthly service provides five gigabytes of data and overages are billed at $10 for each additional gigabyte used. If you already own a USBConnect Adrenaline dongle, you can visit AT&T’s Adrenaline page to download a firmware update to enable LTE on this device.

AT&T's first LTE tablet, the HTC Jetstream, launched on September 4 although the ridiculous $700 price point made it irrelevant before it hit shelves.

The company plans to add 10 additional markets by the end of the year, covering 70 million Americans as 2012 arrives. AT&T has a lot of catching up to do, as Verizon Wireless continues their LTE rollout in 26 additional cities today. Consumers can choose from 11 devices to access 4G LTE on Verizon's network, according to a company press release.