Haven't had any Ultraboosts yet, how is the sizing/fit compared to NMDs and NMD XR1s? Definitely going for Triple Black.
For comparison, I wear a:
UK10/US10.5 for Caged UB's.
UK9.5/US10 for Mesh NMD's
UK9/US9.5 for PK NMD's.
and they fit all almost perfectly. If the UB's are tight you can either go .5 size up or remove the insole before wearing.
the pk material will stretch after some wears
I too will be looking out for the triple black.
btw, anyone was able to cop the packers NMD earlier today? resell is nuts atm.