I dont think I've seen anyone saying it there will be a solo Loriel scene. Caly is the poster girl for this update, she will be getting a scene - it just may not be solo. While there are certainly a max number of scenes per update, the only constraint for number of girls per scene is what logically makes sense.
I think Orion banging Caly doesn't make sense yet given their last interaction - Caly wouldn't agree to that yet. A scene with Loriel (organized by Calypso and who will eventually join in) would be a way to further their relationship and get to that point.
On a meta level, I think it would also be a good way to balance scenes for Calypso. Last time there was a ghost handjob + a touch. The development isn't there for Orion to bang Caly this update, but a solo BJ or HJ would kinda feel like a letdown, given we've got so much of that progression already. Banging a different Elf with a Caly BJ would be the right level of scene to lead to Orion banging Caly next time.
As I recall Cari said there would be 4 scenes with at least 5 of the main LI's. I dont see that as (Caly), (Loriel), (2 LIs), (2 LIs) - I see it as (Caly + Loriel), (2 LIs), (LI), (LI).