If you're a git user, you won't need to update the papyon submodule anymore, core devs will take care of that if needed.
A quick reminder on how to stay in sync with emesene-git, quoting the wiki:
You’ll want to stay in sync with the upstream master branch on emesene/emesene. The easiest way to do this is by adding it as an remote branch
git remote add upstream git://github.com/emesene/emesene.git (it’s just an alias)
Now, make sure you don’t have uncommitted changes! (git status is your friend)
git pull upstream master will merge the upstream repo into yours. If there are conflicts, solve it or git reset --hard
If you want to contribute fixes/features to our own version of papyon, take a look at https://github.com/emesene/papyon
That's the repo we are using for simple fixes and other stuff, from which we'll backport with straight-copy inside the "real" emesene tree