IDE 1.6.7

I am running Ubuntu 14.04LTS....I want to 'reinstall' the Arduino IDE 1.6.7 from the Arduino.cc site, but, even the instructions there lead me to the 1.0.5 release on the Ubuntu Software Center...the Ubuntu specific info on the Playground is only up to U12...How can I accomplish the task i am attempting??

Ubuntu version is a copy of the Debian version.
Debian maintainer to cease to maintain the Arduino IDE, probably the constant changes and the Arduino internal struggle has not encouraged him to continue.

You can install any version you want by downloading the software from this site or from Italian site.
Warning a directory can contain only one version.

Unfortunately you will report to the goodwill of the Arduino to update gcc and avr-gcc and you do not have insurance to use the latest version as was the case with Ubuntu repositories. gcc and other sofwares are downloaded systematically with the IDE.
This means that , by example, gcc will be installed in /usr (Arduino deposits of ubuntu), in the IDE directory of this site and perhaps a third time if you want to also test Arduino SRL version. And probably you can have three different versions.
Windows users will not be shocked, Linux users will find that this is unacceptable and Arduino IDE should use the software already installed in the computer, Unfortunately it is not the case.

Warning : 1.05 configuration files are in hidden directory : " .arduino ".
From version 1.5 they are now in hidden directory: " .arduino15 ".

Please note it appears that the 1.6.6 and 1.6.7 still have problems.
Many here (including me) prefer to stay on 1.6.5.

Beware if you want to test two versions 1.6.7(or 1.6.5) from this site (arduino.cc) and 1.7.8 (from arduino.org), both versions use the same hidden directory, I installed the two, I never had problems but it is best to know it.

Notice : 1.6.5 is more recent as 1.7.8 -> numbering is part of the internal absurd war.
Newer does not mean better: it's everyone to make their choice according to their needs.

68tjs:
Ubuntu version is a copy of the Debian version.
Debian maintainer to cease to maintain the Arduino IDE, probably the constant changes and the Arduino internal struggle has not encouraged him to continue.

Actually I think it's because Arduino has failed to provide sufficient license documentation to allow them to provide the recent versions. See Update license.txt for 1.6.0+ directory structure by maqifrnswa · Pull Request #2703 · arduino/Arduino · GitHub

Thank you for the link I do not know it.

This complements and strengthens it unfortunately also I presented:

Quote of "maqifrnswa", Debian maintainer :

  • That it's possible, this is politically tricky since there are two "Arduino" organisms contents, each contributed significantly.*

Notice : underlining are mine