Hello Linux Geeksters. As you may know, Plank is the default dock app on Elementary OS 0.2 Luna, but it can be easily installed on other Ubuntu based systems. The latest version available is Plank 0.5, which has been released a while ago. For a list of fixes and improvements brought by the latest version of Plank, see the official release notes.
In this article I will show you how to install Plank 0.5 on Ubuntu 14.04 Trusty Tahr, Ubuntu 13.10 Saucy Salamander, Ubuntu 13.04 Raring Ringtail, Ubuntu 12.10 Quantal Quetzal, Ubuntu 12.04 Precise Pangolin, Linux Mint 16 Petra, Linux Mint 15 Olivia, Linux Mint 14 Nadia, Linux Mint 13 Maya, Pear OS 8, Pear OS 7 and Elementary OS 0.2 Luna.
Because it is available via the elementary os PPA, installing Plank 0.5 on Ubuntu, Linux Mint and Pear OS is easy. All you have to do is add the ppa to your system, update the local repository index and install the plank package. Like this:
$ sudo add-apt-repository ppa:ricotz/docky
$ sudo apt-get update
$ sudo apt-get install plank