Expecting the raid this year is very optimistic, even if Blizzard assumes pretty much every guild will finish it in time before the holidays.
Remember, it isnt just the bleeding edge world first raiders that are taken into consideration when a raid is released, but also the regular raiding guilds that will also most likely take a break in raiding.
But yes, a PTR Pre-patch should be due any moment now, and it follows that one might expect a release date at that time.