I thought it seemed a little odd as well, everyone else is getting type 27. But at the bottom is says pending FC APR, and I didn't do my medical yet, so maybe that is the reason?
I did the same thing. I was worried about it, but it was processed in 3 months. As long as you paid the fees and sent the correct paper work, it'll come.
Received my OWP Monday Aug. 24. Application received May 11, 2015, Issued August 18, 2015, so a little over three months. Case Type 20, valid for 1 year.