Sony has unveiled the 2 free games the PS Plus subscribers will get in May 2020.
Cities: Skylines
Farming Simulator 19
PlayStation Plus: 12 Month Membership [Digital Code]
PS Plus subscribers will be able to download both games starting May 4, 2020. They will have to until June 1, 2020, to download both games onto their PlayStation 4 console.
source https://www.simpleprunes.com/2020/04/ps-plus-free-games-for-may-2020-revealed.html