What kind of con? As has been discussed before, he planned to kill him before hand in the opening arc "Batman and Son". He changed his mind.
No idea, but it reminds me of the RIP storyline where we thought it was about Batman dying but in the end it was about him being misplaced in time.
There was no time travel in RIP. You are thinking of Final Crisis and Return of Bruce Wayne.
Bleedingcool is speculating