From that experience, it seems that he gave the leak by accident. Indeed, as you can see on Twitter below, the employee didn’t tell us what game was in the works. However, the leaks themselves believe that this is a Metal Gear Solid 3 game.
What’s more, according to the tweet above, this project unannounced. So, you could say this rumor is going to get bigger, and a lot of people will believe it, considering the number of talks about this before.
However, as we all know, many rumors are not true at all or are also true.. So, you don’t need to believe these rumors just like that. Better to do a deeper search first regarding this rumor.
That way, you will find out later whether these rumors are true or not (make sure you search it from trusted people). In addition, Wowkia feels that Metal Gear Solid 3 Remake is indeed being developed. The release date of this game itself is not certain, but it looks like it will be released in the near future. Maybe, this version will be released next year or in 2023.