Update: 8th July Here is more proof that the episode title we posted was correct. It is for Episode 9.02, so it's appears that they are indeed shooting out of order.
This was posted by Guy Norman Bee
Update: 29th June A number of people have reported that the title is fake as reported by Jim Michaels. It's NOT. It's the title that's currently on the script and the name that has been sent to Audition Houses and Casting Agents. However, Supernatural has been known to change their Episode Titles before it airs so it could change.
Note: It may also be they are filming out of order and 9.01 might not actually be the premiere
To show you what is sent out to Casting Agents here is a redacted screenshot of the casting call.
It will feature Tracy a gorgeous bad-ass Hunter, and Irv, a manly Hunter who is an old friend of the Winchesters.