Originally Posted by Fat R_N
I can't think of any time they gave away Pokemon with different abilities than those that were programmed for them
And since there's likely going to be the ability to import in Pokemon they have to keep them around anyway (if only for trading, but also for breeding)
You might be right actually - I was sure I could remember an alternate ability event Pokemon, but I can't recall one specifically so I suppose I should've kept my mouth shut.
And I wasn't disputing that the abilities will be importable - just speculating that that might well be the only way that they're available, and also that the new generation might not get corresponding extra abilities.