Google SERP showing the link visited time

Now Google is showing the link visited time. This will help me understand that I have visited these pages. How will this help user? I haven’t seen any announcement by google guys yet. I did some tests to understand more about Google visited link time option. Some of the queries I had, Is it cookie based (then it is not better than the visited link color change)? Is it user based? Is it query based? Is it computer or browser based? I found following answers to my queries

Summary of observation

1. Observation 0: I saw the time with the search results
2. Observation 1: Once I logged out I was not able to see it, user based
3. Observation 2: When I logged back I was able to see it. Also I tried it from a different browser from the same machine. Also from a different machine and it showed.
4. Observation 3: It is not query based, I searched with a different query and it still worked.

Is this a replacement for the browser based visited link color?

(Description with screenshots below)

1. Observation 0: I saw the time with the search results
   
   (Example see the time with the first and second link)

2. Observation 1: Once I logged out I was not able to see it
   
   (The visited link color tells me that I have visited these links earlier)

3. Observation 2: When I logged back I was able to see it. Also I tried it from a different browser from the same machine. Also from a different machine and it showed.
   
   (The visited link color does not tell me that I have visited these links earlier, google is able to tell me that now, VERY HELPFUL here)

4. Observation 3: It is not query based, I searched with a different query and it still worked.
   

Enjoy Google, Enjoy innovation