What I mean by variants: Aircraft stretches, freighter, etc. Examples: A320 -> A321, B747-400 -> B747SP, B777-300ER -> -200ER -> B777F, etc.
This is not yet implemented so this new options system won't make that possible - or it may not feasible and would create too much work. However we are also evaluating how having multiple very similar aircraft variants can be done without having multiple duplicates of a near identical aircraft. I don't know yet if this will be added.
What I mean by options: Different engines, different landing gear, additional equipment, new wing-tip, etc. Examples: A320 CFM -> IAE -> neo engines, A320 with and without sharklets, B747 with different engines, etc.
This will be possible with the new options system. Under the hood it is already active as we speak.
In short:
aircraft variants - no, not with this options system
aircraft options - yes
aircraft state (e.g. cold and dark state) - no, this will be solved differently