I'm not so sure. Lucid has described the Sapphire brand as performance focused. And while obviously that can include a track car, I think performance covers much more than just lap time on a race track. I'm betting on a Sapphire Gravity being announced, but I think it's possible for that vehicle to take everything about an SUV to the limit, and not just repeat what they did with the Air. I even think it's possible that the Gravity X concept is a preview of what a Gravity Sapphire would be.
One of the impressive things about a Sapphire Air how it mixes insane track performance with being a vehicle you can happily use as a daily driver as well. I used to drive a Jeep Wrangler, which was incredibly capable off-road, but was objectively terrible on-road. If Lucid can turn the Gravity's off-road performance up to 11, while still being something you'd love to take the family in on a multi-day road trip, that could merit a Sapphire label. I don't think that's the only direction they could go with it, just one plausible option.