Toward the end of last year, waves of rumors asserted the existence of Google's phone. Called Nexus One, it was speculated the phone was due for a January release. All of that became true today, with Google will be available worldwide, with an unlocked model priced at $529. Only GSM varieties will be around initially, though CDMA variants are expected from Verizon down the road. Google is now competing with Apple, Microsoft, RIM and others for a slice of the smartphone market -- which will likely get very interesting this year.