I don't think there's any question about them keeping SOME KIND of dinner package. The question is what form it will take. Until recently, you could only reserve it from WDW, I think up to a week in advance, and there was no requirement as to what you ate at the restaurant. Now, you pay a fixed price for your meal (not sure if you have a limited or full menu) and can make PS for it.
The old program was better, because it gave you more flexibility. I hope they do discontinue what they're doing now. But, since it costs more this way to get your reserved seating, they'll probably keep it as is. The reason it's still on trial basis is they're trying to determine whether or not the fixed price is driving people away from it.