Gimp 2.8.4 was released yesterday, with bug fixes to polish the 2.8 family.
I particularly like the new fixes for this version, because it solve a strong problem introduced in the 2.8 serie ; slow and laggy selection tools and transformation widget , brush outline.
I was active on the Gimp bug report to give feedback and thanks to the brilliant Gimp developers the problem was solved just after few days. With this version, all is much more responsive. The fix slept since this autumn waiting the release, and now released.
Here is how to update your version using the updated PPa of otto06217 :
PPA for Ubuntu 12.04 / 12.10, Linux Mint 13 or 14 :
Open a terminal , and copy paste this lines one by one, then press enter. Press ok or enter if the terminal prompt you.
Note : Ctrl+Shift+V to paste inside a terminal.
sudo add-apt-repository ppa:otto-kesselgulasch/gimp
sudo apt-get update
sudo apt-get install gimp gimp-plugin-registry gmic