i sometimes call their customer support centers located in the dominican republic, and have conversations with the reps. they don't have a definitive date, sometimes they tell me a year, sometimes shorter, but this doesn't matter. the network will still be alive and kicking, when they roll over the normal muggles to standard plans.
FYI- Don't worry I dont use standard topup cards and pins, so what you posted above does not relate to what I do here.