There is a devops-related talk in every hour of this year's Usenix LISA conference. Usenix LISA Is a general conference with many tracks going on at any time. A little analysis finds there is always at least one DevOps related talk (usually more than one). This is very impressive. The problem, however, is that many of the talk titles don't make this clear. No worries, I've done the research for you.
[I apologize in advance for any typo or errors. Please report any problems in the comments. The conference website has the latest information. Other lists of presentations: Programming, Unix/Linux administration technical skills, Cloud Computing, and Women at Usenix LISA.]