Originally Posted by Fat BrianFantana
I wouldn't assume the DW abilities are going to come back.
There have been event pokes with different abilities and moves before and it's not like they've been made available in future games. The DW stuff might not be any different.
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)