The CDC official announcement of the Garden City status confirms that the claim by Nick Clegg of building 13,000 new homes was spurious. 10,000 were already planned and only an additional 3000 will be built as a result of the new scheme.
The one thing that jumps out though is that this will not be a single development, as seems to be the impression offered by Clegg and the government.
Surely the vision of a garden city has always been a single town (such as Milton Keynes) built around a common infrastructure. This seems completely at odds with that.