In a Charlie Rose interview of Google CEO Eric Schmidt, appearing in BusinessWeek, Schmidt casually mentions that Google and Apple have "extended their deal":
Apple is a company we both partner and compete with. We do a search deal with them, recently extended, and we're doing all sorts of things in maps and things like that. So the sum of all this is that two large corporations, both of which are important, both of which I care a lot about, will [remain] pretty close.
Separately in an interview with the Wall Street Journal video with Eric Schmidt in which he says that neither Apple nor Facebook are competitors. "Our competitor is Bing," explains Schmidt. Frenemies, indeed.