November Batman covers

Newsarama have revealed the November covers for Batwoman, Batman and Nightwing. Updated with Detective Comics, Batman & Robin, The Dark Knight, Batgirl, Birds of Prey and Red Hood & the Outlaws.
They have also revealed this from the DC Comics retailer FAQ:

If super-heroes have only existed for five years, how has Batman gone through so many Robins?
Robin is an intern program -and a very intensive one at that.

I think that Batman has been around longer than 5 years in the DCnU. It was 5 years ago that he became publicly known, rather than his previous ststus as urban legend. This has to be, otherwise Damian's existence is a paradox.