Programming Arduino Due

Hi, I am considering buying a Arduino Due(possibly a clone) and was wondering if they are still supported. I have Arduino IDE v 1.6.6 and I don't see that board as an option.

I am currently using the Arduino Mega 2560 for my project with a Touch Screen LCD and it is a little slow for what I am trying to do.

I came across this video on youtube and that is what made me interested in the Due.

I think I found it in the board manager