'The Hateful Eight' is the most recent film that is being shot on 65mm. Is there any other films that are CONFIRMED to be shot entirely or mostly on 65mm? If yes, which ones?

I thought it was 70mm

I think 65mm and 70mm are used interchangeably.

I know Star Wars Anthology: Rogue One is supposed to be using the same cameras and film in 70mm as well.

I've heard that too, but is it going to be shot mostly on 70mm (65mm)?

Technical specs 'The Hateful Eight' say this at the moment:

Camera: Arri Alexa 65, Hasselblad Prime 65 Lenses, Panavision Cameras and Lenses

Negative Format: 35 mm (Kodak)

Well, the thing is, that page was updated before that 65mm announcement.

Huh.. It seems to suggest that some scenes will be shot in 65mm, though. At least that's what I make of this:

Cinematographic Process: ARRIRAW (6.5K) (source format) (some scenes)
Digital Intermediate (4K) (master format)
Panavision (anamorphic) (source format)

Although, I might be misunderstanding it.

Your mom's sextape.