Pokerstars announced there would be 4, one million dollar freerolls
The first was in March
the second in July
So there should be 2 more before the end of the year.
There are various methods to qualify for the freerolls including depositing, completing challenges, special all-in shootouts and the last chance skill qualifier the day before for which tickets are gained by similar various methods.
I would ignore the ticket and try to qualify earlier than the last day.
(In fact I will ignore it, as I have one too).
For now though, we just have to wait until details of the last two get announced.