We assume you've heard the whole China-Google-IE6 debacle that's going on, along with the the Apple-Google falling out, so it really comes of no surprise that Microsoft is using this opportunity to edge Bing over Google search.
In fact the rumor du jour is that Apple is seriously considering replacing Google search as their default search engine on the iPhone with Bing. And why not? Bing has turned out to be a big hit for Microsoft, which is no small feat considering the competition.
We expect as Google gets bigger and more powerful this will happen more often. How long do you think Firefox will continue their relationship with Google and Chrome? We've also heard recent inside report that some OEMs are not happy with Google and the Nexus One for obvious reasons.
Sure if Microsoft pulls this off, it's partially because they're a pawn, but a win is a win in business. Plus the better Bing does, the more money Microsoft can sink into fixing our Bing for Mobile 5.0 application, ahem.