I have the rose version and LOVE it!
I was wearing the MGUT 40mm for a year or so and kept looking for the date, so, from a business standpoint, I MUCH prefer this one.
I know that these are prototype pics, but 2 things I DO really like:
1) the seconds are the same color as all other indices,
2) it appears the date disc is pretty close in color to the dial, so it's not too obtrusive (IMO).
I prefer the date at 6 o'clock, giving the dial perfect balance and symmetry. I also agree with you, Nicolas, 100%, that this case should be the new case for the entire Master line. The bezel's angle is PERFECT in my eyes, and size and width of the horns is just perfectly suited to the case (for me).
This is, to me, a most enduring, classic case design.
-Dean
PS: I can see Boutique editions with honey-brown strap and rose gold hands & indices, as well as navy strap with blued hands & indices.