So the real Jay Garrick (the man in the Iron Mask?) is Earth-2's Henry Allen. Nice. It's a fitting to make John Wesley Shipp the original Flash again.
Physically Shipp and the Man in the Mask don't match up well.. Shipp is a broad guy whereas Mask Man is more a slim type of physique (more like Grant Gustin) so it could be they used a different type of of body to not make it obvious and we all know they don't care about details when it comes to telling the story.
Anyway.. awesome episode and now an entire week to wait! Obviously Barry is not dead but it remains to be seen what happened. My theory is that Barry entered the Speed Force fully.. what happens there besides getting his speed back is anyone's guess but it would be cool if he met other Speedsters from different universes and time lines.. a good way to have 90s Shipp have a cameo as Flash

Wally and Jessie getting hit is also a more or less obvious way of powering them up, maybe they will join in the final fight and thus be able to defeat Zoom (even untrained as they are though they could cop out and have Barry take them to the Speed Force to train them up quick and not lose real world time).
On the Iris/Barry relationship.. this bugged me all season that they didn't move a bit on their personal relationship after it was such a big deal in season 1. They even had a gf for Barry and Iris seemed very fine with it and "suddenly" she has a 180 and she's in love with Barry? A "Come On!" would have been appropriate if the scene wasn't so well acted but it still came very fast and a little out of the blue even with some hints in past episodes.
Overall a fantastic episode as the show gears up for the finale. One week.. Come on!