From what I'm hearing, Google is not happy with Samsung. Google wants to lead and direct the future of Android but Samsung wants to do what's best for Samsung. Google is facing a bit of a dilemma. They can't push and risk alienating their number one device producer and they don't want to lose control of Android. Their only option is to move faster than Samsung to make sure samsung follows.
[1] https://plus.google.com/100275307499530023476/posts/ViCME1bb...