Install OpenSSH 7.3 in Ubuntu 16.04

openssh-7.3.sh

$ ssh -V
OpenSSH_7.2p2 Ubuntu-4ubuntu2.1, OpenSSL 1.0.2g  1 Mar 2016
$ wget https://launchpadlibrarian.net/277739251/openssh-client_7.3p1-1_amd64.deb
$ wget https://launchpadlibrarian.net/298453050/libgssapi-krb5-2_1.14.3+dfsg-2ubuntu1_amd64.deb
$ wget https://launchpadlibrarian.net/298453058/libkrb5-3_1.14.3+dfsg-2ubuntu1_amd64.deb
$ wget https://launchpadlibrarian.net/298453060/libkrb5support0_1.14.3+dfsg-2ubuntu1_amd64.deb
$ sudo dpkg -i libkrb5support0_1.14.3+dfsg-2ubuntu1_amd64.deb
$ sudo dpkg -i libkrb5-3_1.14.3+dfsg-2ubuntu1_amd64.deb
$ sudo dpkg -i libgssapi-krb5-2_1.14.3+dfsg-2ubuntu1_amd64.deb
$ sudo dpkg -i openssh-client_7.3p1-1_amd64.deb
$ ssh -V
OpenSSH_7.3p1 Ubuntu-1, OpenSSL 1.0.2g  1 Mar 2016

Latest OpenSSH client stable as of now: 7.5p1-10

wget https://launchpadlibrarian.net/335526589/openssh-client_7.5p1-10_amd64.deb
wget https://launchpadlibrarian.net/298453050/libgssapi-krb5-2_1.14.3+dfsg-2ubuntu1_amd64.deb
wget https://launchpadlibrarian.net/298453058/libkrb5-3_1.14.3+dfsg-2ubuntu1_amd64.deb
wget https://launchpadlibrarian.net/298453060/libkrb5support0_1.14.3+dfsg-2ubuntu1_amd64.deb
sudo dpkg -i libkrb5support0_1.14.3+dfsg-2ubuntu1_amd64.deb
sudo dpkg -i libkrb5-3_1.14.3+dfsg-2ubuntu1_amd64.deb
sudo dpkg -i libgssapi-krb5-2_1.14.3+dfsg-2ubuntu1_amd64.deb
sudo dpkg -i openssh-client_7.5p1-10_amd64.deb
ssh -V

Thanks, it works! However, for those who wants to use the shiny new Include directive in ssh config, I must warn you that the autocomplete seem to be broken or at least not loading hosts from the included file.