Sakura was saved by one of the slugs and when she opens her eyes she sees Konoha damn near wiped out. As she cries she calls for Naruto.
Shima-sama is the mama frog (presumably Fukusaku's wife).
Tendou really seemed like he was radiating from Heaven (could be the technique or just a comment about Pain...a little vague). No idea what happened to Konan, but the other Pain bodies appear to be totally disposable.
Momma frog (and probably Naruto too), might summon a frog/toad that's possibly even higher up than Bunta.
The last scene is a bird's eye view of Konoha. We see a giant cloud of smoke that could be from an explosion or summoning.
Pain's super Shinratensei is bigger than Kuma's paw bomb from One Piece and is more like Deidara's strongest technique.
Tendou Pain is apparently Nagato. Right before Pain does Shinratensei, Konan says "You'll only shorten your life, Nagato." And incidentally, right before he does Shinratensei all the other Pain bodies collapse.
Tsunade was charging her legs/feet up with chakra
Kousuke (from the spoiler above) is the frog that Danzou killed.
Pain's technique is around as powerful as an atomic blast.
Sakura is crying and hoping that Naruto will come soon. It seems like Naruto is going to have a dramatic entrance like in Dragonball when Goku comes back after badguys like Freeza and Cell have totally beaten the crap out of everyone and everything. Almost brings a tear to my eye (tugging on his heart strings and all that).
