Here is the full statement from thatgamecompany:
As a small indie studio, it’s been challenging to pull off so many releases back to back. Due to the remote slowdown during COVID and our utmost priority to protect our team’s health, we’re pushing Sky on Nintendo Switch back by a few months into 2021.
Through the pandemic, we’ve done our best to release Sky on Android, manage a live game, and launch two new adventure seasons. We’ve been excited to finally bring this game to console as much as you have, and thank [Sky] fans for their patience while we work on its release.