I'm still highly dubious that any "4G" version will (initially) work with the 1800Mhz EE network. I guess we'll find out soon enough though. It's all well and good it being a "4G LTE" version, but if it only works on 700Mhz band then it isn't too much use over here.
I *hope* to be proven wrong though!
...Also, it's looking more and more like it's the grey phones that are delayed, with white available from now / Monday. Still, I don't like white phones, and I would rather wait an extra two weeks to get the darker colour. I'm probably going to be keeping the phone for two years, and while it would be nice to have the phone a few days early, I know I would be annoyed at myself later if I went for a white one just to have it a week or two early.