Google Voice is going to die and become a part of Hangouts. It's going to be great. And it might actually be happening soon because you can now make Hangouts calls from the Google Voice homepage.
This (very minor) change brings Hangouts and Voice closer together than they've ever been and cuts Google+ out of the equation by not requiring an account. It's the kind of change that makes you ask the question Why are these two services separate anyway?
Hopefully they won't be much longer. [Engadget]