Sorry if this looks like a repost, but here's some information on the update that would interest most people; It is SAFE to update your system if you have A9LH (make sure your CFW has firm protection)
11.0 blocks SVChax
-> 11.0 downgrading is not available any more
-> N3DS 8.1.0-0J need to stick to Private Server again
-> Other -0/-1 Frankenfirmwares are not exploitable again