This question reminded me about this quote about the Etymology of DevOps, From Wikipedia:
At the Agile 2008 conference, Andrew Clay Shafer and Patrick Debois discussed "Agile Infrastructure". The term DevOps was popularized through a series of "devopsdays" starting in 2009 in Belgium. Since then, there have been devopsdays conferences, held in many countries, worldwide.
So at the risk it may not 100% fit the rules in your question, I thought I'd post what, IMO, is "the reference" to get an up-to-date answer if you ever wonder something like
What's up in DevOps-land?
In such case, you probably can find the answer to your question at http://www.devopsdays.org/ .
At this very moment, it shows links to these locations:
Beijing - Vancouver - Denver - Atlanta - Tokyo - Seattle - Zürich - Austin - Stockholm - Salt Lake City - Toronto - Amsterdam - Washington, DC - Minneapolis - Portland - Dallas - Raleigh - Chicago - Detroit - Istanbul - Paris - Hartford - Philadelphia - Oslo - Cape Town
PS: From the above quote, it should also be clear what the relationship is with DevOps and Chocolats, Beer, Fries and ... Drupal.