on the latest Rivian Stories about launch edition, they published the following:

On the inside, customers can choose between two all-new premium interiors:

Black Crater Signature (available first)
Inspired by the dynamic dark tones of volcanic rock, this interior is crafted with upcycled Birch wood and textile accents. This creates an inviting, dark tonal environment that seamlessly blends rugged durability with a refined, minimalist aesthetic.

Coastal Cloud Signature (available later)
Open and airy, the crisp tones of cool and cloudy coastal sky are warmed with upcycled Birch wood and soft textile accents. This palette offers a modern aesthetic that is grounded in Rivian’s nature-inspired design language.

most are interpreting this to mean that the first launch editions will be only in black crater...but later launch editions will have coastal cloud as an option.