There is an intersting article in What Happens in an FCC Rulemaking Proceeding? - PC World

Quote Originally Posted by PCWorld
In short, the proposed rules say that a broadband provider could use "reasonable" network management, but:

-- Would not be allowed to prevent any of its users from sending or receiving the lawful content of the user's choice over the Internet;

-- Would not be allowed to prevent any of its users from running the lawful applications or using the lawful services of the user's choice;

-- Would not be allowed to prevent any of its users from connecting to, and using on its network, the user's choice of lawful devices that do not harm the network;

-- Would not be allowed to deprive any of its users of the user's entitlement to competition among network providers, application providers, service providers, and content providers;

-- Would be required to treat lawful content, applications, and services in a nondiscriminatory manner;

-- Would be required to disclose such information concerning network management and other practices as is reasonably required for users and content, application, and service providers to enjoy the protections specified in this rulemaking
As I read this, the new rules would prevent providers from restricting tethering.

Everyone intrested in tethering their Pre should go to FCC Electronic Comment Filing System and submit their comment. The Docket in question is "Commission Inquiry Into Broadband Market Practices Docket
Docket - 07-52"