It's a bit weird. It looks like we are going to see him jump forward in time in each issue until he reaches the present, but there are complications, too.
Just thought if you were enjoying B&R you might want to look at the tie-in.
It does look like being its own fairly self-contained beast, though. It has its own themes beyond just the development of the plot. It's going to look into both what makes Bruce tick (what is he without his modern urban/superhero context) and Gotham's long association with Bat-mythology.
But I'm glad Batman and Robin is being enjoyed by readers who would normally be wary of Grant's usual work. He can do straight-up superhero thrills when he wants to, which we're all in it for. He certainly writes Dick and Damian as uncomplicated 'get out there and do the job' types.
I'm looking forward to it, Figs -- but money's dictating that all my Morrison Batman (and most anything else) be enjoyed in trade sometime down the road. The mini's very tempting, though... It's only the possibility of it inadvertently spoiling some other Bat-comics I haven't read yet (I don't know how, but with time travel it's certainly possible) that's keeping me from buying it in singles.
By the way, you'd asked a while back if Sprouse did any DCU stuff. He was the original artist for the Legion spinoff, Legionnaires, in the 90s.That was my introduction to him, and his work was gorgeous even then.