Well, but, so what? Is it the apparent degree to which Bing appears to be weighting information from the toolbar? Otherwise, I don't see how this is new.
The difference is that this was not observed from a sting operation where Google tried very hard to show that their rankings were having an effect on Bing results. It's a happy accident that I decided to take a closer look at and write my thoughts up on. And I'm sure there's more evidence living in Google Analytics that might make an interesting research paper.