Yes, the new time is 8pm, but they let us check in at 7pm this Saturday b/c there are still people who bought their tickets before the time changed who don't know about the new time (like us!). This is a grace period, and then they'll be officially checking in at 8.
I was livid when I picked up our tickets that afternoon and discovered the new time on the ticket, because I'd made 7:30 Blue Bayou reservations and now had half an hour to eat!
We ended up having to wait for a walk-up reservation at 5:30 b/c they were booked (naturally), and then I went to stand in line for Fantasmic check in at 6:30 because I am a nerd. Well I'm glad I did, b/c at 6:50 they wheeled out the podium and I was first in line!
Frankly, I won't do the dessert buffet again if check-in for the 9pm show is at 8pm. You know people will start lining up at 7 or 7:15 the way they used to line up at 6 or 6:15, and then when you check in at 8, it's only a few minutes before the suggested return time of 8:20. So basically you end up waiting as long as you would have to get a free seat for Fantasmic! (the desserts were all bland and straight from the refrigerator - not worth $60 to me!).
Sorry - guess I shoulda been typing this in a letter to the resort, not to you guys!