Apple announced yesterday that iOS 4.3, which will be available March 11, will bring personal hotspot capability to GSM iPhone 4s. AT&T confirmed to Phone Scoop that the company will support the mobile hotspot feature on launch, unlike the over year delay on USB/Bluetooth tethering support. To use the personal hotspot feature, customers will need to subscribe to the DataPro 4GB data plan for $45 a month.

If you would rather get this feature for free, there is an app for jailbroken iPhones called MyWi which lets you turn your iPhone into a Wi-Fi access point.  MyWi gives you the ability to use your iPhone’s 3G connection with your iPad or any computer with Wi-Fi.  It also enables Internet tethering over USB and Bluetooth.