Legacy OS is the core: vault, circle, guardians, scheduled delivery, and remembrance — the estate-shaped workspace. Digital Twin (when offered) is an optional layer for inbox continuity in your voice; it is not required to plan a legacy or to leave messages for family.
Pricing reflects that split. You can maintain Legacy without subscribing to Twin add-ons. If Twin is on a waitlist or coming soon, the product pages say so — check the live site rather than old screenshots.
A simple rule of thumb
If your priority is “who gets what, and when,” start with Legacy. If your priority is “keep answering email as me,” that is Twin territory — and it should stay clearly labeled when it ships.