If you are on Ubuntu (and derivatives) and don't mind to add an extra repository to your system, you could install it from PlayDeb.net.
Here's the link on how to install the repo: http://www.playdeb.net/updates/#how_to_install
After adding the repository, you can install the fresh version from your terminal, software center, Synaptic or whatever you prefer after updating your software sources. (sudo apt-get update)
They always support the last long term support and the latest versions of Ubuntu (and Ubuntu based
). Also keep in mind, that they might need a week or two until they put up updates to their repository.
I use it, because they got WZ2100, Xonotic, GemRB, ScummVM and mednafen together with a lot of other great games and emulators up there.
The also have an application repository...