Except... Disney has never done that before.
Disneyland has twice had a paid night-before openings. And WDW has never done that: not for Pandora, not for TSL. For Pandora, WDW had early openings for CMs, APers, and DVCers. For TSL, they were under too much of a time crunch and offered exclusive access to APers and DVCers a few month later.
Now, what WDW does do is early morning and late night hard-ticket events -- and a lot of them. Based on past experience I expect WDW to:
- have daily morning EMH for several months
- give APers and DVCers limited early access time, or several exclusive night times
- have near nightly DHS After Hours for several months