It's important to note that these changes appear to be (as of now) only for this upcoming Friday, Saturday, and Sunday. That said, I wouldn't be surprised if we see them start extending hours piecemeal as each weekend gets closer when (thanks to the reservation system) they have a firm idea of how many Guests they're expecting. September has certainly turned out better than they feared, so we'll see if the "crowds" continue. Again, I know I say this a lot but October is going to be very important in determining what park hours situation and offerings look like for November and December.