Many outlets, including us, have been using the name Nexus 6 because this is the 6th Nexus device, and because it is going to have a 5.9-inch display. But, regardless of how much sense it makes, Google will not be using that name because of trademark issues. Google already had some troubles with the family of author Philip K. Dick threatening a lawsuit because of the use of the name Nexus. In tDick's story Do Androids dream of Electric Sheep? (which became the movie Blade Runner), the androids were model Nexus-6, so it makes sense that Google wants to avoid that name.
In terms of the release plans, we're being told that Google is planning a secret launch just like last year. The Nexus X will be released on or around Halloween without an announcement. We've been expecting the release to be in October or November, so this makes sense. Unfortunately, we don't know what the price will be when the device does launch.
