It appears that the Iris' death scene is in 3x22 not the finale. If someone else (HR) dies in Iris' place then the death should occur at the end of 3x22. This would place the funeral at the beginning of the finale. Since in the leaked scene they're still in their funeral clothes then maybe that isn't the final cliffhanger but a moment that takes place in the middle of the episode.

In my previous speculation I had placed the Iris' death/confrontation with Savitar in the middle of the finale, the funeral towards the end and the leaked scene as the final cliffhanger.

I hope Barry gets to defeat Savitar and be the one who saves Iris but I'm not counting on it. What I get from that scene is that the Speed Force is punishing Barry for his failures and he's accepting of his punishment. Then for whatever reason he comes back and we get something else as the final cliffhanger.

They shot on location in the Square 2 nights ago because it was too windy the week before and that's where the Iris/Savitar scene is shot - it was for 3.22. More spoilers, one of those whosaw it said it ends differently this time - obviously.

I really hope Barry learns the lesson the SP was trying to teach him, maybe he'll really be able to step up to the plate and be the main hero without assistance this time.