Here's the Android 4.4 dialer
The only picture I can find. That design doe, definitely Hangouts inspired haha.
Just combine the apps why don't you Google?
By the way for those who haven't heard, apparently this thing will use maps to map incoming calls to businesses and pull up the relevant name and picture for said business.
Additionally the dialer will learn more from how you use the phone and orient your phonebook to reflect that, bringing forward the most contacted numbers at certain times of the day I assume.
It'll also auto complete numbers you don't have stored in your phone for businesses as well (restaraunt delivery, company support, etc) and maybe it will do the same for certain circles in Google+? I don't know, but so far this is what I've heard.