I will not update my 3ds until its absolutely needed, or another handheld is released. I'm a cheap bitch.
I wish I didn't update mine so I still had access to the XY/ORAS QR code glitch, it would've been helpful to have perfect IV dittos for breeding, but unfortunately the system forced me to in order to play certain games.
Just caught ANOTHER SHINY EEVEE using the Dex-nav on Route 116. This one was level 18 and had Adaptability (the last one was level 8 w/ Anticipation). Both have superior potential though. This will be my shiny Umbreon for my Moon play through come this fall. I'm excited.