Do I have the most recent versions? (Gimp, G'Mic). Kubuntu 17.10

I can’t figure out how I ever got Gimp 2.10.2 on my computer. It just showed up one day. Does this mean that I added a PPA at some point and I just don’t remember? Is this a decent way to keep up to date?

$ cat /etc/apt/sources.list.d/otto-kesselgulasch-ubuntu-gimp-artful.list 
deb artful main
# deb-src artful main

I also remember adding a PPA to get the latest G’Mic filters for the gimp. But I am not sure I’m running the latest version of G’Mic since the Gimp 2.10.2 update came out. The following seems to be saying that Gmic is upgradable to a newer version, but it is not happening when I do the normal sudo apt upgrade command. Does this look right?

$ apt list --installed -a gmic
Listing... Done
gmic/artful 1:2.2.3+omg-ubu17.10.1~ppa amd64 [upgradable from: 1:2.1.5+om-ubu17.10.1.1~ppa]
gmic/now 1:2.1.5+om-ubu17.10.1.1~ppa amd64 [installed,upgradable to: 1:2.2.3+omg-ubu17.10.1~ppa]
gmic/artful 1.7.9+zart-4build1 amd64

With this terminal linux stuff, I know just enough to be dangerous. I’m just looking for a sanity check to make sure I’m doing it right.

The PPA you have will give you the most recent versions. You should consider updating from 17.10 to 18.04, because 17.10 is out of support soon. The PPA should be good on 18.04 as well.