They'll come soon enough. No one knows exactly when
It's almost impossible to say when it will be brought in. Will it be brought in? Sure. It's just a matter of time. BTW, the IGN is pretty cool, check it out if you haven't already.
Hoping to fish for any rumors I may have missed in my internet search about when that functionality will show up. I'm sure it will come, just curious as to when. And what about Youtube? What's the hold up??
I did download the IGN app, the controls are a bit confusing until you really learn them, but the content and arrangement are beautiful.