Today the FSF announces the release of the GPLv3. The announcement coincidentally is on the same day as Apple's much awaited iPhone release.

As the GPLv3 press release states:

“Tivoization” is a term coined by the FSF to describe devices that are built with free software, but that use technical measures to prevent the user from making modifications to the software—a fundamental freedom for free software users—and an attack on free software that the GPLv3 will put a stop to.