Is there any plan to host an apt repository for installation on platforms that use apt for installation and updates (Ubuntu and Debian mostly). Just having a downloadable deb for installation that would add PyCharm to the menu would be great, but having that available in a way that would automatically keep it up-to-date would be even better. PyCharm is good enough that I'll keep installing and updating manually, but I almost never install software that doesn't at least have a PPA (personal package archive). An apt repo is very easy to setup. It's basically just apache with directory listing enabled and setting up the right directory structure.
The best way I've seen of doing this is the way Google Chrome handles it. They have a .deb file available for download from their website which installs easily. This .deb then installs a new file in /etc/apt/sources.list.d/ that adds their repo to my apt sources. This then handles keeping Chrome up to date from then on. It would be a huge help for your Ubuntu users if you provided something similar.