Well...this seems to be the first time this has happened -
Last week Sony Playstation announced that this month's (July) free Playstation Plus games would be - "Horizon Chase Turbo" (an Outrun-esque racing game) and soccer game "PES 2019" - a day into the month and a change has been made. Unsure what the reason was, and no exact word has been seen...but now it's "Horizon Chase Turbo" and the Digital Deluxe Edition of "Detroit: Become Human" - which by the way includes a Remastered version of "Heavy Rain" and a few other goodies.
A better option spurred on by criticism? Or just an announcement snafu? We may never know, but we now have a change in the monthly lineup.