A few more things I've noticed after using it for a few days:
They seem to have changed the Exposure Level Indicator. It doesn't appear at all on the bottom (like all the other EOS bodies I have used) unless you have auto ISO and even then the indicator doesn't move in M mode, it just stays at 0. Unless you use exposure compensation..............
The new ELI is on the right hand side. Very easy to overlook!
The (new 'N') battery doesn't last long, neither do older ones. Canon offer a free battery grip to the first 10,000 buyers in Japan who send off the documentation. I mailed in the form right away, having 2 batteries may be essential. I switched GPS off right away too. It's a thirsty camera.
Not being able to use Lightroom is a bit of a pain. I used to use DPP/Photoshop but 2 years ago I changed to Lightroom for 99% of my PP work and much prefer it. Not that DPP is bad (far from it) but Lightroom is (for me) so much quicker and easier. C'mon Adobe, hurry up.
The AF seems very quick and the burst mode is great. I was worried about 'only' having a 400X CF card but it seems to be holding up nicely. Having dual cards is good too, in fact I forgot to put my CF card back in the camera , went out taking pictures and didn't even notice.
I'll hopefully give it a bigger workout over the next week or so including high ISO shots. I'm not expecting miracles but I want useable shots at ISO 1600.