Question: Which is the latest version of ubuntu operating system?
Disambiguated questions and answers: question: Which is the latest version of ubuntu operating system as of 19 October 2017?
Which is the latest version of ubuntu operating system as of 13 April 2017?
Which is the latest version of ubuntu operating system as of 13 October 2016?
answer: Ubuntu 17.10
17.10
Artful Aardvark
Zesty Zapus
Ubuntu 17.04
17.04
Ubuntu 16.10
Yakkety Yak
16.10
question: What is the Unbutu OS version released on 2017-10-19?
What is the Unbutu OS version released on 2017-04-13?
What is the Unbutu OS version released on 2016-10-13?
answer: Artful Aardvark
17.10
Zesty Zapus
17.04
Yakkety Yak
16.10
Natural Questions answer: 17.10 Artful Aardvark (from the Wikipedia article "Ubuntu (operating system)")