I don’t think Disney will release the unaltered versions because they are still in the vaults of George Lucas. Kathleen Kennedy also stated that she never touched those versions and that they all belong to Mr. Lucas.
They are in Lucasfilm’s vaults, not George’s.
Kennedy said she would never touch his versions, meaning she would never allow further changes to the SE not done by him. This does not necessarily mean she wouldn’t consider including the original versions alongside George’s preferred version.
That guy who interviewed her at SWCO did not ask her specifically about whether the unaltered versions will ever be restored and released, if that was even his intention.
I think Disney/Lucasfilm will wait until after Episode IX to comment on this matter at all.