Due to a change in Steam's pricing policy, it has been decided to set prices for all games and DLC to $0.99. All future products will also be released at this price (if there are no new surprises).
Also today, games 5.0 and 6.0 were tested and received official Steam Deck support.
https://store.steampowered.com/app/1132070/50/
https://store.steampowered.com/app/1165860/60/