On reflection I'm pretty certain you are wrong, the only Blue Planet on blu is the IMAX one, which is pants compared to the BBC documentary. Still, wish the BBC one was available. One of my fave docs of all time.
I thought that the BBC Box Set of ' Blue Planet ' was still only available as a Standard DVD.
I'd certainly buy 'Blue Planet .. the Complete BBC series Box Set in an instant. I long to be pointed at the site where I can buy it so do tell.
Also long overdue for a Blue Ray make-over is 'Walking With Dinosaurs ' the Complete BBC series including ' Walking With Dinosaurs - Ballad Of Big Al ' as a Blue Ray Box Set ... which is odd since you'd think that it would have tremendous commercial potential. Maybe they are waiting for the 'Jurassic Park ' movies to be released in Blue Ray?