Item Count on Inventory window

[Murilo BiO']

Hi!

I've seen this feature on some servers (the icons at the bottom), here is an example:

But I can't change the old inventory window into these icons even using 2015~2016 clients....
 

Look:

Does anyone knows how to configure it?

 

[Mystery]

I believe that new inventory is in the new 2016 clients. 

 

[Murilo BiO']

I believe that new inventory is in the new 2016 clients. 

 

Any idea of wich one? I've tested with 2016-02-03, now i'm going to test the 2016-12-28..