Per Sony’s own email:
Hi <PlayStation User>,
Our brand-new PlayStation™Store launches on web and mobile from 21 – 26 October 2020, and we are making some changes to the content you can access on PS Store via your desktop and mobile devices.
What is changing?
The following changes will come into effect online from 21 – 26 October, and on mobile on 28 October:• You will no longer be able to buy:
o PlayStation®3 games and add-ons
o PSP™ (PlayStation®Portable) games and add-ons
o PlayStation®Vita games and add-ons
o Apps
o Themes
o Avatars• The Wishlist feature will be discontinued and any items currently on “Your Wishlist” will be removed.
What does this mean for you?
The content listed above will no longer be available to buy on PS Store when accessed via a desktop or mobile device. However, you will still be able to buy PS3™, PSP or PS Vita content by accessing PS Store directly from your PS3, PSP or PS Vita. PlayStation®4 apps, themes and avatars can also be downloaded via PS Store on your PS4™ console.What about the content you already own?
You will still be able to access all your previously purchased PS3, PSP or PS Vita content as before. Your existing PS4 apps, themes and avatars will remain on your PS4 console.Where can you find out more?
If you have any questions about these changes, please visit https://www.playstation.com/get-helpAll PS4 titles (except incompatible titles) now have this notice in the store:
To play this game on PS5, your system may need to be updated to the latest system software. Although this game is playable on PS5, some features available on PS4 may be absent. See PlayStation.com/bc for more details.
You can also check out some other titles affected via this post on Twitter.