The C Block, a chunk of wireless spectrum currently being auctioned by the FCC, just hit its reserve price of $4.6 billion. We've known this would happen for months now. Google promised it would at least bid $4.6 billion if the FCC promised the auction winner would have to open the spectrum to any legal device or software — rules that favored Google, not the established carriers. This milestone signals that Google has gotten its way — so far. [NYT]