Just got an email from TouringPlans about Hollywood Studios hours changes-- for my stay (1/25-2/2), at least, it looks like Hollywood Studios hours are being extended in the mornings, with the park opening at 8 AM instead of 9 AM.
Along with this, they've eliminated the morning EMH on that Sunday and replaced it with evening EMH from 8 PM to 10 PM. Kind of messes up my original plan for that day with FastPasses and everything, but probably works out a little better overall, especially if they're still doing the virtual queue/boarding groups for Rise of the Resistance by then.
Probably worth checking to see if the hours changes affect any of your plans... I haven't checked to see if they've changed hours for any other dates in January, but I'd guess that they probably made similar changes for the whole month.