On October 20th, Smea confirmed that the payloads for 3DS 11.6 have been released, both otherapp payload and ninjhax have been updated, which means you can use Ninjhax 2.9 works on 3DS 11.6.0-39.
If you want to play out-of-region 3ds games with sky3ds+ on 3DS 9.0-11.6, you can install Ninjhax 2.9 to access homebrew launcher and play region free games with region free launcher. All you need is one sky3ds+ card and one 3ds CUBIC NINJA rom.
Ninjhax user guide