GrapheneOS: We do plan to support Motorola's [future] Razr Fold and Razr Ultra (flip) devices in addition to a regular device.

An earlier tweet:

Initial focus for our partnership with Motorola is a regular non-folding device. Current generation Motorola Signature (2026), Razr Fold (2026) and Razr Ultra (2026) are very close to meeting our requirements but lack MTE, adequate secure element integration and other features being added for 2027.

So a regular non-folding one is kinda confirmed.

Having more choice beyond only Pixels only mean good things for us. Seems like Motorola is being a good partner for GOS, I am hopeful.