Earlier last week, evleaks sent out a tweet that said that the Nexus 6 is not going to happen. He hinted that with the Nexus program dead, the Silver Certification program at Google would replace it. Under the program, manufacturers would build super-spec'd Android models with a limited number of non-Google apps.
The latest word we have is that LG and Motorola are interested in the Silver Certification program, while HTC and Samsung are not. There are reports that Samsung was called into Google's HQ with the latter telling Samsung in no uncertain terms that it was unhappy with the gimmicky apps that Samsung has been loading onto its devices. It feels that Google is trying to consolidate its power over Android by subtly reigning in the platform's major manufacturers. The Silver Certification program is one way in which Google is attempting this.