Just quoting the news from Facebook:
Hi Everyone, we have a Pinball FX3 Williams Pinball Volume 2 release update for you. Unfortunately, we are going to see a few delays with the release of the pack on PlayStation 4 in North America, and on Nintendo Switch. Please note the new schedule below, and we apologize for these changes. Game publishing is always a challenge, especially during the holiday season. There are a lot of reasons content does not release on time - we hope you understand.
The new schedule:
Dec 4 - Xbox One, Windows 10, Steam, PS4 Sony Europe, Mac
Dec 5 - PS4 Sony North America
Dec 18 - Nintendo Switch in North American and Europe
