Preview at WWDC likely in June, followed by September launch.
Tether Launches HTML5-Based iPhone Tethering Solution
"It was clear from our initial application iTether, there was enormous demand within the iPhone ecosystem," says Tim Burke, CEO of Tether. "It was unfortunate that Apple decided to remove our application, only 20 hours after we launched. However, this caused us to innovate. Our underlying patent-pending technology behind Tether for iPhone is unlike anything on the market."
Tether's new version for the iPhone is purely based on HTML5 and creates a completely wireless connection over AdHoc. This circumvents the need of buying the application directly from Apple's App Store and allows any iPhone or iPad with a data connection to allow tethering.
The service costs $30 per year and can be ordered through Tether's website.