No I actually dont think it will open at 11am, because the webstore (not matter if EU oder USA) is managed by some white IT guys behind computer screens. and they didn't employ some more IT guys in uk just to open a damn online shop, no the guys from USA do that shit because its just one click more. then the peeps at uk warehouse send the shit out to yall cats.
It would also be pretty damned stupid to open one online shop at 11 am UK time and the usa store 6 hours later. They opened the japan store always at the same time they opened the USA webstore.
You can be as angry as you like, it won't change the opening time ruff_rugged_raw.