Things are on track for 6:25PM EST today. The first version of the client wont include KGW, a unique icon, and there may be issues with max coin supply. The second release of the client will fix all these issues and will be available within 1 week of the initial launch.
You shouldn't notice any of these issues as the max coin supply wont be reached within a week, and there will be difficulty calculation every block with a maximum % in which it can go up and down.
Happy scalping.