Apparently it doesn't. They've asked the FSF and they've said:

Quote:
I see no problems with this model. If the software is licensed under the GPL, and you distribute the source code with the binaries (as opposed to making an offer for source code), you are under no obligation to supply future releases to anyone.

Please be clear that the subscription is for the support and distribution and not for a license.

Peter Brown
GPL Compliance Manager
Free Software Foundation