DO NOT UPDATE! Leave your 3DS at your current firmware!
If you do update the outcome will be this:
1. You foolishly updated your 3DS to 9.4
2. You can still enjoy sky3ds and such
3. Nintendo drops update 9.5 which BLOCKS sky3ds
4. You are now stuck on 9.4 forever and you can only launch games which use 9.4 or lower on sky3ds
Your options are now limited concerning future games, as you are on firmware 9.4, so you cannot use Gateway anymore and their emunand.
You also can't update to latest firmware anymore, since sky3ds will be blocked.
So my advice: do not update just yet, and wait it out until Gateway releases their new support