Last week, Gematsu found that Sony filed a trademark for ‘Soho Engine”.
— Gematsu (@gematsucom) October 23, 2020
Unfortunately, the trademark does not provide any detail or any minimal info about its nature. We can guess that this trademark belongs to a new internal engine for PlayStation Studios, but as we said, we are only guessing.
As a curiosity, Team Soho was the British developer (based in Soho, London) behind The Getaway, a famous open-world game for PS2.