According to a source in El Al I spoke to today, it will be doing a special route over Israel upon arrival next Sunday, making the flight about an hour and a half longer than the regular route. There will be some sort of "chagigah" on board, and my understanding was that there's going to be additional celebration after landing.
This flight is unique that it can ONLY be booked with Matmid points (over the phone), and there's zero additional taxes charged.