[qbunnie]

If anybody is measuring bandwidth with tether, looking at upload will be the best way to tell between Rev 0 and A. That is where the largest gain was. Anything above about 150 kbps on upload is 100% Rev. A. There is only a marginal increase in speed in download, and I think most people won't notice a real different when comparing specs.
Just from test to test I could jump from 200 kbps to 700 kbps down, and both Rev. 0 and A are capable of those speeds.