Hopefully it comes with a real tilty screen and not the cheap half-baked one-axis tilt.
Please just speak for yourself. I really would be frustrated if a Tilt/Screen will be on the next fullframecamera. The times for a buildin Tiltscreen are gone (for me) and most Pros I know don't like it. It's taking more space and is prone to get broken (even if this is unlikely today). There are so much solutions with better and larger screens on the hotshoe, connected via HDMI. You can even use every smartphone with WLAN to reach even more impossible viewingangles.
But 99% of the time I wouldn't like to see this on my cam. And no Flash eighter.