Had my interview June 14. Interview time was 7:55am, came in at 7:40, passed through security, checked in and was told to proceed to wait area atr around 7:51am.
At 7:55am I was called by the IO. He took my Oath, proceeded with the Civics part 6 questions, English test read and write.
He then went ahead with my application, asked me what's my name, dob, about my job, my wife, etc. After that he congratulated me and told me he was recommending for approval. 30 mins later, status changed from recommendation for approval to In line for Oath on the USCIS case status.
In total interview time was 8 minutes max, it took me longer to get through security and check in.
Very easy interview. BTW this was my first time interview with USCIS.