I got a little bit annoyed about the situation for us Ubuntu users who stick (for which reason however) on the LTS Version.
So I played a little bit around and managed to get the new Cura installed.
Disclaimer:!!!although all the following worked on my machine with now noticable damage so faryou try it on your own risk!It's possible that you damage your paket-management and/or your system!!!!
Add temporary this source to your package-sources:
deb http://us.archive.ubuntu.com/ubuntu vivid main universe
Install the cura-package - with the above source it can satisfy the depenencies
Remove (or diasble) the above package-source direct after the cura installation, otherwise your package-management will try to do a unnecessary (partial) dist-upgrade.
Voila ... the newest cura is running under the "so old" Ubuntu LTS Version.
But wait ... here comes the next glitch:
Starting - ok
Loading a stl - almost (more about later *) ok
Layerview - nope
Looking at the "Engine-Log" shows the reason:
The CuraEngine needs the "libprotobuf.so.10" - puuuh
Even in the newest Ubuntu is the highest you can get "libprotobuf.so.9"
After some more hours of research I found a hint that this libproto-stuff was bundled with the 15.06.01 version but is no longer in the 15.06.02!
So unpacked the 15.06.01 local and copied the needed files to the correct places:
all the files starting with lib* you find in /usr/lib
the folder /google you find in /usr/include (don't know if this is realy necessary?)
Done ...
* loading .stl files:
at the moment with "all supported types" and "stl files" only .stl files where recognized but no .STL files :(
you have to switch to "All Files" to although see this files.
Hope this helps somone, but don't blame me if you damage something (see the disclaimer above)
P.S.: for the Linux-Mint 17... users - not tested, but there is a good chance that it worked for you too