Ok, so this video shows Windows Phone 8.1 feature: Folder Naming!

[taymur]

So was watching this video from The verge, then suddenly, she changes the folder name!? what is this update, could it be GDR2?

 

[gMaesterUK]

Nope, that feature is included in Update 1 (GDR1) along with Live Tiles...

G.

 

[sinime]

That feature is in the 8.1 update, I believe... If you have 8.1 and drag a tile over another to make a folder, you can then open the folder and tap/hold the line at the top of the folder to name it.

 

[taymur]

Nope, that feature is included in Update 1 (GDR1) along with Live Tiles...

G.

yup yup, my bad, just realized that i can do that.

move along people nothing to see here.