Nah. Batman should be older than Superman.
I think it'll depend on how WB wants everything to be creatively and moviewise. Do they want an older actor around for more Batman movies and being deemed too old in the process? I personally think a younger actor for a newer generation (even though by that time TDKR will still be our newish generation

And I don't get this talk of Batman being established in the reboot, means having to be played by an older actor. That doesn't need to happen at all.