As you already know, Wireshark is a free, open-source, protocol analyzer software, very used for monitoring the network traffic.
It is an ideal tool for those who want to learn networking concepts, monitor the network activity, even spy on users that don’t exchange data with services requiring encryption.
The latest version available is Wireshark 2.0.3 which has been recently released, bringing a big list of changes.
Up to date packages are available via some third party PPA, so installing the software on Ubuntu 16.04 Xenial Xerus, Ubuntu 15.10 Wily Werewolf, Ubuntu 14.04 Trusty Tahr, Linux Mint 17.x, Elementary OS 0.3 Freya and other Ubuntu derivative systems is easy.
All you need to do is add the PPA to your system, update the local repository index and install the wireshark package:
$ sudo add-apt-repository ppa:wireshark-dev/stable
$ sudo apt-get update
$ sudo apt-get install wireshark
Optional, to remove wireshark, do:
$ sudo apt-get remove wireshark