Call users from inside your Gmail

Today I found several references to an unreleased feature in Gmail while digging through the source code.  The code clearly referenced a feature that will enable users to call contacts from inside Gmail.  While writing this post, I noticed the feature has started appearing in my account already.

if(v){N.push(bn(U,"call_"+f,U? "im/call_button.gif":"im/call_button_disabled.gif", " Call"))}

If my eyes are seeing correctly, it appears some users should have a "Call" button in their Gmail when Google Talk is connected -- clicking this button opens up a new voice conversation with the selected user through Google Talk.  As of right now, we are still unable to place or receive incoming calls directly through Gmail -- but I have a feeling that's is on the "to-do" list.