... you have EmuNAND and update your (mostly luma3DS-) EmuNAND to 11.3. ... if you have A9LH and update your sysnand to 11.3 you should also be fine. So what is the worry if the only group affected are the unhacked 11.3 users? They did this (update) intentionally, so they have to wait now! 11.3 is really harmless if you already have CFW (no matter if EmuNAND or A9LH). Please correct me if I got something wrong.