Only got my one yesterday but after the .8 update on the flight screen it said SD Full which I don't think it could indicate before.
The card was also empty and it reported negative space free but erase all seems to have fixed that.
With an empty card it still reports -1 photos and in video mode still gives you full zoom range of you are not recording (even if digital zoom is set to off). You can then start recording at that zoom level even when HDR is on.