It is a clear condition which defines what can be called a revised version, so I’m pretty sure that it has legal meaning.
Originally Posted by LightBit
But in case you don’t trust judges to see it the same way, GPLv3 includes a second term: You can name a proxy who can take the decision whether a new version of the GPL may be used for your project. But for that you have to use the GPLv3. GPLv2 does not include an option for it.
Let me give you the full quote:
Originally Posted by http://gnu.org/licenses/gpl