Kindred at Worlds 2015, Why Not?

No, they'll be using 5.18 or 5.19 patch (or whatever they were already on) for the duration to avoid unnecessary disruptions.

No. They're playing/training (I think) on the 5.18 patch

No because worlds is being played on Patch 5.18. Kindred is not going to be available

I think you underestimate how much time it takes teams to actually get some proper skills, builds and strats with a new champion.

The reason why pro games are usually 2 patches behind live is because pros need at least those 2 weeks, probably more like a month, to check if a champion is viable, and if it is, how.

It's not like they pick up a champion and know how to play it and how to teamfight with it just because they are pro, they are pro because they spend ages practising.

So, no Darius debuff or anything from the new patches.. Darius, Morde and a loot of op "easy" champions will be still available to win games (easily).