Any idea when the Tribunal will be Back?

It isnt coming back, they prefer Riot "Shitstain" Lyte's instant feedback bot.

It's unknown when it'll be back, despite statements that it will be "soon".

I imagine that it's tough to get around the problems of the first system. Like not being prompt with judgements. It's likely that when they do employee the Tribunal again, they'll use a combination of the automated system to judge clear-cut cases that can be quickly handled, and the Tribunal for cases that are hard for an automated system to judge like intentional feeding.

Never.

There isn't an ETA of when the feature will be back, but Riot has said that after the League Client Update, they do want to take a look at bringing this back.