The tweet below shows the first trailer for the game. Furthermore, the official website of Pikmin provides more information about the game. For example, new content has been added compared to the game that came out on Wii U:
Players can co-op the game and walk through the story together. That story features a new prologue and a new epilogue. Olimar and Louie also return in this game. Furthermore, a number of gameplay improvements have been made and a Piklopedia has been added.
Team up with a friend and play through the main story together and experience a new prologue and epilogue with Olimar and Louie!
Pre-order here: https://t.co/Uyvse3e2VL pic.twitter.com/Fyo07MFS1f
– Nintendo Netherlands (@NintendoNL) August 5, 2020
Pikmin 3 Deluxe will be released on Nintendo Switch on October 30.