About a year ago, I read an article in a French newspaper with a senior Nokia executive who was very, very excited about their Microsoft partnership that allows them to read Office documents on their phones. When asked about competing smart phones, he seemed to get pretty obsessed about how wonderful Microsoft was. I felt pretty worried about Nokia's future after reading that article.
Note that this should be taken with a grain of saltit's been filtered through both a newspaper reporter and my limited command of French. But I wouldn't rule out a big strategic shift to Windows 7 Mobile, either.