Hangouts app GV Calling?

[mech1164]

From what has been mention online, it looks like SMS and GV in some form is coming in Hangouts when Kit Kat drops. My question is placing a call. On the desktop you can make a phone call through hangouts with your GV number. It works well and sounds great. Now do we think that this could be coming in with the update to the mobile hangouts app? If they did that would be a Big deal for Google. and the mobile industry.