Anyone who has trouble starting update after download, if validation fails just turn off wifi for validation and let it send checksums via 3G. Not much data needs to be transferred and the servers don't put a temporary block on operator IPs.
IOS7 looks half finished. Grey bits, the one on the bottom with four default icons and the space for grouped apps simply asks to be semi transparent. Everything is gigantormous. Fonts are MASSIVE and random sizes everywhere. Incoherent settings setup. Too many blinding white backgrounds in many places. Fisher price flat icons. Definitely step back, more arts and crafts in primary school, less of the 3D OSX look we cherished and everyone imitated for years. And I will have to somehow get used to it, because we finally have quick toggle.