I have the unlocked S6 Edge, bought in the UK with OXA CSC (Europe wide, unlocked & unbranded) - I got the update yesterday.
My fiancée has an identical phone but she has BTU CSC (UK, unlocked and unbranded) and doesn't have the update.
I just jumped and pre-ordered an S7 Edge on Monday morning. Don't know if I'm an idiot or not. £639, but I'll get £250 back for my S6 Edge from envirophone.com so not too bad.
Just worried about the size of it, I don't like big phones - but I liked the LG G4 when I had it and it's not bigger than that. Hopefully I won't be all, argh, when it arrives.
Oh yeah, huge battery life improvement for me with MM on my S6!