It seems the SSH default acess in Raspbian has been switched off in the latets (25 nov 2016) release.

But easy to get it going by creating an empty file in the root of the SD card with name ssh (jut that, no extension, no content required)

2016-11-25:
* SSH disabled by default; can be enabled by creating a file with name “ssh” in boot partition

So another little step to perform when preparing a SD card for headless first boot!

Oh, the system nags about password after enabling SSH:

sudo apt-get remove -y pprompt for the gui prompt

The CLI warning is raspberrypi-sys-mods, delete the file /etc/profile.d/sshpasswd.sh