Ghost of Tsushima 2

Hey guys I have being hearing a lot of rumors about the sequel of the game ,but every time I google stuff I don't find any concrete evidence about it .I found even a trailer but it was fan made .are we really sure that a sequel is in development ? I would love to be true. If you have any news or link confirming it can you share it in the comments ? . I just finished the game,the dlc , and new game+ on lethal .I know I can't get all trophy for legand mods because I have to have the ps+. And I'm craving more lol so knowing that a sequel is on the work would really help 💯