Apologies if I'm wrong but wouldn't it be unheard of for a club to be punished (fines aside) for the current season? A points deduction would be next season at the absolute earliest, even if the PL have already reached a verdict.
But if they stay up this season when a points deduction would see them relegated, then at least one relegated club would have cause to complain.
That's why I'm unsure of the timeline. I guess from the PL's standpoint the least controversial outcome is to find them guilty in June and apply a points deduction for next season, as if the panel finds against them whilst this season is ongoing, it would be expected to apply a points deduction now - assuming that level of punishment is even on the cards.
It all comes down to whether the PL want to see the back of Everton, or help them back onto their financial feet. As I've said several times, if they go down, they go under. It really is that simple - it doesn't matter what label they apply to their losses.