Here's a separate press release from PlayStation Studios has more details: https://sonyinteractive.com/en/news/blog/an-important-update...

In particular it lists some other studios not mentioned in this one:

    The US based studios and groups impacted by a reduction in workforce are:
    * Insomniac Games, Naughty Dog, as well as our Technology, Creative, and Support teams
    
    In UK and European based studios, it is proposed:
    * That PlayStation Studios’ London Studio will close in its entirety;
    * That there will be reductions in Guerrilla and Firesprite