Here is a news from the gateway 3ds official site released today.

You may have noticed that system firmware 8.0.0 has recently been released.
We have analysed this update and we want to advise our users the following:

- Currently do not update emunand to this version as it will not boot. Old emunand versions (7.x or lower) will keep booting fine.
- If you did update emunand, do not worry. Our next firmware update will bring your updated emunand back to life.
- This update uses the same encryption as 7.x, only applied to more system processes which prevents emunand booting.
- We are still on track on getting our next firmware out, this update does not change much in our game plan.

Thank you for your patience once again and as always ENJOY.