Yes, this new stack was released on 2016-04-08. You can find more information about the releases and the changes that include at:
It is possible to open a specific port in OS X, although you wiill need to jump into Terminal. You can use the pfctl command. Follow these steps to open a specific port in OS X.
sudo vim /etc/pf.conf
Then add the following line at the end of the file (where XXXX could be 8080 or 8443):
pass in proto tcp from any to any port XXXX
sudo pfctl -vnf /etc/pf.conf
I hope this information can help you.