In order to upgrate preact cli I had to do the following:
sudo npm uninstall -g preact-cli
sudo npm install -g preact-cli
(sudo npm update -g preact-cli kept the old version from some reason)
I would like to understand if that's normal, or maybe it's something specific to my laptop.
Here are more details about my setup:
cat /etc/lsb-release
DISTRIB_DESCRIPTION="Ubuntu 16.04.2 LTS"
node --version
v7.10.0
npm --version
4.2.0