I think is tough to make a comparison just because things with a Nexus device just don't happen the same was as a typical VZW device. The announcement for the Rezound that you are talking about was during the promo event by HTC, right? That already throws a wrench into the works because the OEM got to announce the launch date, but in this case the carrier wanted to be stingy and wouldn't let Google say anything about it. I don't know that I have ever seen VZW actually "announce" a launch date on their own, it seems like it has always been that they finally set one, it leaks far enough down that people let it slip out and the community gets a pretty good idea of when it's coming and then 2 or 3 days before the actual drop we might see 1 or 2 commercials with a date on them. I remember there were commerials with a release date on them for the bionic 3-4 days before it dropped and people were still on here questioning if it would really release on that date or not and VZW store reps were saying they couldn't confirm the date on the commercial.