Apparently it edits out my link but its in Forbes today. Google "Nokia here Samsung" its the first result.
And to answer your question, its huge because Samsung, the largest maker of android phones, is cutting an important part of Google's data mining ecosystem out of its own platform. Mapping is massively huge to controlling the mobile market. It tells customers were to buy things and it tells google what people do and where they go. Google is an advertising company and maps is big business. They just got cut out of their own platform by their biggest vendor.