Re your last line, I would say that as we havnt come to the end of the system yet, (though I belive it will be soon, just not 100 years ago), then the true religion will indeed come back, but it wont be a religion of man, it will be led by Jesus himself, it will be announced by the "Two Witnesses" who will perform the signs from the Bible in a literal sence, not the figurative sense the JWs put on all prophesy in a way that they can make apply to them.
As for who the "Two Witneses" will be? maybe Elijah and Moses, or two existing Humans, but one of them certainly wont be the Satanic Pyramid as the Witnesses claim.
Maybe this answers your first question as well, as the JWs are not the true religion, then mankind is at present in exactly the same position as it was before the IBSA, namely that God is available to any who sincerely want to fnd him.
As for Truth, its allways been in the Bible, when its required to know more specific "truths", then the high Priest Jesus will reveal it as per Daniel 12, it will be differant from the JWs "wise understanding" because, coming from Jesus, it will be correct from the start, and wont have to keep being revised and changed.