Seems gateway and therefore 3DS piracy as a whole will encounter a serious problem once games require 7.0.0:
https://twitter.com/Mathieulh/status/423877433570648064
You can also read the following 3DBrew site. The important part is "FIRM and whitelist":
http://www.3dbrew.org/wiki/7.0.0-13
It seems that nintendo found a way to stop piracy on the 3DS. The upcoming games will need a key in order to be playable. This key will be generated BEFORE Native_Firm is booted. Since this key is not contained in 4.5.0 it can't be generated and since the Native_Firm is not booted again when entering emuNAND, it neither can be generated by emuNAND.
As far as I know there are only two ways to break this:
Finding an exploit for 7.0.0 or
Getting a bootrom dump through chip decapping
This might stop 3DS piracy for quite some time...