I sincerely doubt we'll get anything like that. Amnesia stories are convoluted and inherently filled with drama-killing technobabble. It creates a situation where the protagonist is going through something no human being - or very few - have ever experienced, so it's difficult to relate to. Everyone can relate to wanting something more, feeling like they're wasting their lives, feeling abandoned - less can grasp what it's like to be someone different because of some amnesia spell. It works in a game because you are the character, you've gone through a big chunk of what they've gone through, in a sense; less so in a piece of popular fiction that requires a large section of the audience to relate closely to the character.
I would bet millions I don't have that they will never reveal that Rey was mind-wiped after turning to the dark side. It's dramatically inert and convoluted, and the writers won't want to make the hero of their family franchise a mass murderer.
Which is a problem, because when several people are jumping through so many hoops such as the incredibly lazy "wind wipe" to explain away how Rey's parents could possibly be such cunts to leave her in slavery to that horrible creature on a dead planet... We were discussing this on the TFA thread and I came up with the theory that it ONLY makes sense if Kylo was the one to drop her there. If we haven't even met Rey's parents in the canon yet... Thanks? JJ?
So we're dealing with either A) Rey finds her parents, and they're dirt bag cunts, or B) Luke is his father, and dropped her there in his sadness and said "peace!"